Physics

Jun Ye elected to the American Academy of Arts and Sciences

Rachel Sauer — Thu, 23 Apr 2026 18:14:01 +0000

Jun Ye elected to the American Academy of Arts and Sciences Rachel Sauer Thu, 04/23/2026 - 12:14

Election recognizes Ye's extraordinary contributions to physics and quantum science, including pioneering advances in optical atomic clocks, precision measurement and quantum many-body physics

��ý�� scientist Jun Ye has been named a member of the American Academy of Arts and Sciences.

Ye is a professor of physics at CU ��ý�� and physicist at the National Institute of Standards and Technology (NIST). He holds the Monroe Endowed Professorship in Physics and is a fellow at JILA.

Learn more about Ye's honor

Election recognizes Ye's extraordinary contributions to physics and quantum science, including pioneering advances in optical atomic clocks, precision measurement and quantum many-body physics.

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Colorado AG advises Quantum Scholars to be curious in changing times

Rachel Sauer — Wed, 22 Apr 2026 19:31:40 +0000

Colorado AG advises Quantum Scholars to be curious in changing times Rachel Sauer Wed, 04/22/2026 - 13:31

Rachel Sauer

Attorney General Phil Weiser spoke to Quantum Scholars Tuesday, emphasizing the need for critical thinking in a time when ‘our capacity to govern ourselves is now being undermined by the technologies that we need to govern’

In a roomful of Quantum Scholars, Colorado Attorney General Phil Weiser began his remarks in the 1860s.

As the students in the room are now, people living then passed through a time of world-changing technological advancement. Then, it was the railroad and telegraph, which fundamentally altered people’s conception of distance, Weiser said.

Today, “we're too close to it to have a full grasp of the changes that are happening in our society, in our economy, but they are profound,” he said. “We're coming off of this transformation of the internet that all of you have grown up with, swimming in the water, whereas Noah (Finkelstein) and I lived in a pre-internet world.

Colorado Attorney General Phil Weiser speaks to Quantum Scholars Tuesday afternoon.

“We know how this world is different, but none of us fully knows how quantum and AI and other emerging technologies will pose yet another transformation. And one of the challenges of this moment that's a little different than even 1860 is our capacity to govern ourselves is now being undermined by the technologies that we need to govern.”

Weiser’s remarks came during a guest lecture Tuesday afternoon to members of Quantum Scholars, a program conceived in the ��ý�� Department of Physics and the College of Engineering and Applied Science (CEAS) that offers undergraduate students opportunities to learn about the quantum field, including connections with local industry leaders and introduction to new quantum technology.

The Quantum Scholars program includes undergraduates studying physics, mathematics, engineering and computer science and aims to advance quantum education and workforce development through professional development, co-curricular activities and industrial engagement.

Finkelstein, a distinguished professor of physics who co-directs Quantum Scholars with Professor of Distinction Michael Ritzwoller, noted in his introduction of Weiser that while researchers and innovators in the quantum field have studied its past and keenly look toward the future, “we haven't had folks on policy yet. It turns out that's going to be the third leg of advancing quantum sciences and sciences in general.”

‘How do I know this is true?’

Weiser, who is dean emeritus of the CU ��ý�� Law School and an adjunct faculty member, noted that “one of the embarrassments of this moment is how deeply dysfunctional and non-responsive national public policy-making institutions are. When you think about social media, when you think about AI, when you think about quantum, there are all sorts of opportunities, there are all sorts of challenges, and we don't have the institutions to meet them.”

He gave as an example Anthropic’s Mythos AI model, which can both detect and exploit software vulnerabilities, and which the company hasn’t released because of threats it could pose to global cybersecurity.

“There are a couple of possible scenarios there,” Weiser said. “One is that they're really good at marketing, and they want to make sure that every single bank and other institution uses the product first to protect it from the product. Could be.

“Or, they're actually trying to be socially responsible, knowing that there's no national governing framework or body that can help manage cybersecurity harms.”

When Weiser worked in the Obama White House in 2009-2010, he and his colleagues were beginning to talk about the challenges of cybersecurity, and how the challenges of technology governance are quite different than the challenges of rural agriculture governance or urban industrialization governance “because technology of the age we're now living in moves so fast,” he said.

Distinguished Professor Noah Finkelstein (right) greets Colorado Attorney General Phil Weiser (left) before Weiser's talk to Quantum Scholars Tuesday afternoon.

“And sadly, we have a government that's unable to come to terms with this, raising the question, ‘How are we going to govern ourselves in this age?’ You've heard lots of people say things like AI can be as dangerous as nuclear weapons, and we came up with international governing institutions to deal with the threat of nuclear weapons. We may well need some to deal with the challenges and threats of AI. Are we up to that challenge right now?”

In that vein, Saksham Hassanandani, a first-year student majoring in mathematics, asked what he can do to “help and advocate for such changes? And especially if I end up in an industry . . . that may not care for the ethics. What can we do as people to fight for this change?”

Weiser mentioned that he and his team are currently suing Meta for the design of social media—"they designed a product in a way that they knew was harming people,” he said—but nevertheless encouraged Hassanandani and his fellow Quantum Scholars not to “take as a steady state that the company you're going to work for is acting in a way that's unethical. I would start with an aspiration that you're going to be working for a company who cares about its customers, who treats its workers fairly and who thinks about society.”

Should that not be the case, Weiser advised them to be clear on their own ethical boundaries and whether they are willing to advocate internally for change and “ethical capitalism.”

Related to concerns about technology ethics, Grace Kallberg, a third-year student majoring in aerospace engineering, mentioned the growing threat of AI generating misinformation. She asked, “Is there anything that we can do as individuals to kind of help combat that?”

“Everyone here has an extraordinary opportunity as a citizen to think long and hard, and to help others think long and hard, on the following question: How do I know this is true?” Weiser replied. “You are swimming in information that is shared or, as you put it, AI generated in ways that we may not know whether it's true or not. And that is a fundamentally different position than the world that I grew up in. I grew up in a world that had editors who reviewed information before I got to it. You're not in that world.

“And so, what you can all do is wrestle with the challenge that you and others have: How do I know this is true? And then make that discipline part of your habits of mind.”

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All photos by Patrick Campbell/CU ��ý��

Project harnesses next-generation satellites to preserve Arctic sea ice

Rachel Sauer — Tue, 17 Mar 2026 22:11:24 +0000

Project harnesses next-generation satellites to preserve Arctic sea ice Rachel Sauer Tue, 03/17/2026 - 16:11

CU ��ý�� researcher Ivy Tan leads a project recently funded by Ocean Visions that aims to assess whether mixed-phase cloud thinning is a viable method for cooling the Arctic

Ivy Tan, a ��ý�� assistant professor of physics, recently was awarded funding from Ocean Visions for a project she leads that is assessing whether mixed-phase cloud thinning is a viable method for cooling the Arctic and restoring sea ice.

Tan’s project is one of six funded by Ocean Visions, a nonprofit ocean conservation organization pursuing solutions to counter and reverse climate impacts on ocean health. The selected projects are being funded through Ocean Visions’ Arctic Sea Ice Restoration Research Fund, which was created to identify, prioritize and support research on cutting-edge ideas to slow the loss of Arctic sea ice.

“Arctic summer sea ice is a critical foundation of the global ocean and climate system, and its rapid loss is creating a series of severe risks to nature and people across the planet,” says Brad Ack, Ocean Visions CEO. “These research projects, and others to come, are intended to help answer the glaring question: Is there anything else we can do to forestall these potentially irreversible outcomes?”

“This support from Ocean Visions will allow us to better understand the radiative influence of Arctic clouds on the rapidly warming Arctic by spectrally fingerprinting the far infrared radiative signature of clouds using state-of-the-art technology,” Tan says.

Tan and her research colleagues—Sebastian Schmidt, a CU ��ý�� professor of atmospheric and oceanic sciences, Michael Diamond at Florida State University and Colten Peterson with the NASA Goddard Space Flight Center—are developing a new, satellite-based Arctic cloud observation product using recently launched satellites with unprecedented routine measurements of far-infrared radiation (NASA’s PREFIRE CubeSats), as well as collocated radar, LiDAR and imager instruments.

“We will compare the satellite observations to those made with ESA/JAXA’s recently launched EarthCARE satellite and an aircraft (as part of NASA’s ARCSIX campaign),” Tan and her colleagues explain. “These comparisons will be used to produce and validate an algorithm that provides information on cloud properties and their radiative effects on the Arctic surface on a broad spatial scale. Our framework will uniquely take into account the influence of the vertical thermal stratification of the Arctic atmosphere helping us to determine where and when mixed-phase cloud seeding would, or would not, have potential as a climate intervention strategy.”

Among their aims is to help make mixed-phase cloud thinning a more viable method for cooling the Arctic and restoring sea ice. For this to happen, however, “there would need to be enough of the right type of cloud present to be thinned by seeding (clouds containing supercooled liquid water), at the right time (polar night), to produce the desired climate forcing (cooling). Unfortunately, accurately measuring these clouds, especially at night, is very challenging with current satellite products,” the researchers explain.

Ocean Visions selected the six projects through a competitive process, including review by an independent international expert panel. The research to be conducted will provide the foundation for future work, if warranted, to further advance knowledge and address ecological, social and ethical dimensions, as well as develop guidance on safeguards or stage gates for future research, according to Ocean Visions.

“The research supported through the Arctic Sea Ice Restoration Research Fund prioritizes scientific merit, interdisciplinary approaches, and careful risk assessment through a rigorous review,” says Dr. Ginny Selz, Ocean Visions senior program director. “We are excited to watch this research progress and see how it expands our understanding of potential approaches to protect and restore Arctic sea ice.”

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CU ��ý�� researcher Ivy Tan leads a project recently funded by Ocean Visions that aims to assess whether mixed-phase cloud thinning is a viable method for cooling the Arctic.

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John Cumalat named Big 12 Faculty of the Year Award winner

Rachel Sauer — Tue, 10 Feb 2026 16:00:37 +0000

John Cumalat named Big 12 Faculty of the Year Award winner Rachel Sauer Tue, 02/10/2026 - 09:00

He and fellow honorees represent ‘what makes college campuses thrive as places of learning and growth’

John Cumalat, a ��ý�� Professor of Distinction in the Department of Physics, has been named a 2026 Big 12 Faculty of the Year Award winner.

The award celebrates a top faculty member from each Big 12 school, recognizing their excellence in innovation and research. The 16 honorees “represent what makes college campuses thrive as places of learning and growth,” according to Big 12 officials.

Professor of Distinction John Cumalat has been named a 2026 Big 12 Faculty of the Year Award winner.

"We are constantly looking for ways to highlight how Big 12 faculty continue to educate and inspire the next generation of leaders," said Big 12 Chief Impact Officer Jenn Hunter. "From the arts and filmmaking to business and engineering, this year's cohort showcases the vast opportunities available to students pursuing an education on Big 12 campuses."

The Big 12 Faculty of the Year Award is also an opportunity to showcase the diversity of research breakthroughs and educational opportunities afforded to students attending Big 12 institutions and helps attract future students, according to Big 12 officials. Faculty of the Year Award winners were nominated by their institutions in conjunction with Big 12 faculty athletics representatives, provosts and other university leaders.

“I am fortunate and humbled to be recognized with the Big 12 Faculty of the Year Award from the University of Colorado, as I am well aware there are so many talented peers in my department, my college and across the campus,” Cumalat says. “My selection is a great honor for my Department of Physics and my colleagues in high-energy physics.”

Cumalat, who last year was recognized with the CU ��ý�� Hazel Barnes Prize, is best known for his research in particle physics and for developing state-of-the-art particle-detector technology and instrumentation.

After earning his PhD in physics from the University of California Santa Barbara in 1977 and completing postdoctoral work as the first Robert Rathbun Wilson Fellow at Fermilab in Batavia, Illinois, Cumalat joined the CU ��ý�� physics faculty in 1981. He has been recognized with multiple honors at CU, including the Best Should Teach Award in 2003, the Robert L. Stearns Award in 2010 and the BFA Excellence in Service Award in 2013. He became a College of Arts and Sciences Professor of Distinction in 2014.

Cumalat is a member of multiple professional organizations, as well as the Compact Muon Solenoid experiment at the Large Hadron Collider at CERN, the current principal investigator of the CU High Energy Physics Department of Energy Grant and the principal investigator of the Professional Research Experience Program with the National Institute of Standards and Technology.

Cumalat has authored or co-authored more than 1,500 publications and has been cited more than 200,000 times, according to INSPIRE, an online hub that collects scholarly work in the field of high-energy physics. He has also served on several dozen graduate-student committees and on approximately 150 undergraduate-student thesis committees.

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He and fellow honorees represent ‘what makes college campuses thrive as places of learning and growth.’

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Space physicist Mihály Horányi honored as 2025 professor of distinction

Rachel Sauer — Fri, 24 Oct 2025 19:47:36 +0000

Space physicist Mihály Horányi honored as 2025 professor of distinction Rachel Sauer Fri, 10/24/2025 - 13:47

College of Arts and Sciences leadership and peers recognize the physics professor’s service, teaching and research with the award

Mihály Horányi, a ��ý�� professor of physics, has been named the 2025 College Professor of Distinction by the College of Arts and Sciences in recognition of his exceptional service, teaching and research.

Mihály Horányi, a CU ��ý�� professor of physics, has been named the 2025 College Professor of Distinction by the College of Arts and Sciences.

The college presents this prestigious award annually to current faculty members who are scholars and artists of national and international renown and who are recognized by their college peers as teachers and colleagues of exceptional talent.

“I’m truly surprised and honored by this recognition from my peers,” Horányi says. “LASP and the Physics Department at CU ��ý�� are extraordinary communities of talented and passionate people who continually push the boundaries of scientific discovery and space exploration. I feel incredibly fortunate to have had the opportunity to collaborate with so many inspiring colleagues over the past 30 years.”

Horányi is a physicist who conducts theoretical and experimental investigations of space and laboratory complex (dusty) plasmas. He also studies electrodynamic processes and their role in the origin and evolution of the solar system, comets, planetary rings, and plasma surface interactions; dust charging, in situ and remote observations of dust; and dusty plasma laboratory experiments and space hardware development.

He received an M.S. degree in nuclear physics and a PhD in space physics at the Lorand Eotvos University in Budapest, Hungary. While a graduate student, Horányi worked on the Vega mission to comet Halley. At that time, the Russian probes Vega 1 and Vega 2, as well as the European Space Agency Giotto and Japanese missions, were happening, and “the large international interest and the excitement of building instruments that would fly in deep space was mesmerizing to me,” he recalled in an interview with NASA. “For me, figuring out the most important science questions to ask, which measurements to make, and what is the right balance between capability, reliability, mass, power needs, schedule, and cost remains challenging and exciting ever since.”

Horányi joined the Laboratory for Atmospheric and Space Physics (LASP) in 1992 and the CU ��ý�� Department of Physics in 1999. He served as a co-investigator for the dust instruments onboard the Ulysses, Galileo, and Cassini missions and as a principal investigator for the dust instruments built by LASP: the Student Dust Counter (SDC) onboard New Horizons, the Cosmic Dust Experiment (CDE) onboard the AIM satellite, and the Lunar Dust Experiment (LDEX) onboard the LADEE mission. He is the principal investigator for the Interstellar Dust Experiment (IDEX) onboard the recently launched IMAP mission.

He is the author or coauthor of more than 300 refereed publications and is a fellow of both the American Physical Society and the American Geophysical Union. The International Astronomical Union renamed Asteroid 1998 AX9 as 164701 Horányi in his honor.

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College of Arts and Sciences leadership and peers recognize the physics professor’s service, teaching and research with the award.

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2025 Nobel Laureate in physics once served as mentor to grad students at CU ��ý��

Kylie Clarke — Thu, 09 Oct 2025 18:46:26 +0000

2025 Nobel Laureate in physics once served as mentor to grad students at CU ��ý�� Kylie Clarke Thu, 10/09/2025 - 12:46

Kirsten Apodaca

Like many rockstar scientists, 2025 physics Nobel Laureate John Martinis spent time in ��ý��’s rich scientific ecosystem mentoring graduate students and inspiring others in quantum computing.

In the 1990s, while working as a scientist at the National Institute of Standards and Technology (NIST) in ��ý��, Martinis also held the position of a physics lecturer at CU ��ý��. His university affiliation focused on research collaborations and mentoring graduate students as a research advisor in the Department of Physics.

“It was important to us to build partnerships with NIST scientists, to foster more research collaborations and opportunities for our students,” said John Cumalat, professor of physics and chair of the department at the time of Martinis’ appointment. “John was instrumental in recruiting graduate students to CU ��ý��.”

It was important to us to build partnerships with NIST scientists, to foster more research collaborations and opportunities for our students. John [Martinis] was instrumental in recruiting graduate students to CU ��ý��.

The Department of Physics history book lists Martinis as a lecturer from 1993 to 1999. He supervised several PhD students, some in partnership with John Price, emeritus professor of physics.

Price fondly recalls his research collaborations with Martinis. When Price was a new faculty member starting out in a related field, Martinis shared his circuit design and building expertise, helped make samples, and provided general guidance and wisdom.

“He was generously helpful with people who had aligned interests and wanted to see everyone do interesting science,” said Price.

While at NIST-��ý��, Martinis worked on fundamental physics and technologies that were critical to the development of quantum devices now used in NIST electronic current and voltage standards.

"John enriched the scientific community not only in quantum computing related electronics, but also in several areas related to low-temperature microelectronics,” said Price.

Much of Martinis’ work at NIST has continued under the leadership of Ray Simmonds (also a physics lecturer) and other group leaders, with physics graduate students continuing to conduct their doctoral research at NIST.

“This is the rich opportunity that our students receive –– it’s not only the classroom instruction, but also the broader scientific community,” said Price.

Among today's quantum information superstars who worked at NIST are Kent Irwin (top left), now at Stanford, who helped to develop highly sensitive single-photon sensors and John Martinis (right). This photo was taken in the 1990s at the NIST-��ý�� laboratories. Photo by NIST.

CU’s partnership with NIST has flourished over the years, both through JILA, a joint institute between CU ��ý�� and NIST, and through the Professional Research Experience Program (CU PREP) which provides research opportunities for students and postdoctoral researchers with scientists at NIST.

Martinis was one of the co-organizers of the inaugural ��ý�� Summer School for Condensed Matter and Materials Physics with Professor Leo Radzihovsky, which launched in 2000. He has returned to give lectures during the annual school several times since, maintaining connections with colleagues at CU ��ý��.

Martinis later became a professor at the University of California Santa Barbara, before working for Google and most recently co-founded a quantum computing startup Qolab.

The Nobel

Martinis shared the 2025 Nobel Prize in Physics with John Clarke and Michel Devoret “for the discovery of macroscopic quantum mechanical tunnelling and energy quantization in an electric circuit,” according to the Royal Swedish Academy of Sciences.

In the 1980s, Martinis was a graduate student in John Clarke’s lab at UC Berkeley, working alongside postdoctoral researcher Michel Devoret. Their experiments focused on electrical components called Josephson junctions – devices made of two superconductors separated by a thin oxide layer that particles ordinarily can’t cross.

Martinis shared the 2025 Nobel Prize in Physics with John Clarke and Michel Devoret for the discovery of macroscopic quantum mechanical tunnelling and energy quantization in an electric circuit.

However, thanks to a quantum effect called tunneling, pairs of electrons can pass through – even though this defies the laws of classical physics.

The idea dates back to 1928, when physicist George Gamow used quantum tunneling to explain why certain materials give off radiation, or alpha decay. Gamow later became a professor of physics at CU ��ý�� and is the namesake to both the Gamow Tower in the Duane Physics and Astrophysics building and to the George Gamow Memorial Lecture Series.

Superconductors, when cooled to very low temperatures, allow electricity to flow without resistance. In this environment, particles behave as one unified wave, all moving together as if they are one.

Through a series of experiments, the team discovered that these large-scale quantum states acted like individual particles, showing behaviors of quantum mechanics like tunneling and discrete energy levels.

This work created the basis for using superconducting circuits to create qubits, the fundamental unit of quantum computers. It laid the groundwork for many researchers and companies now working to build the first operational quantum computers that have the potential to revolutionize technology in many areas, like drug discovery and cryptography.

Want to learn more? CU ��ý�� boasts five Nobel laureates, four of them in physics. Professor of Physics Paul Beale is interviewed about the 2025 Nobel Prize in Physics at this link.

Get the latest info.

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Scholars aim to build community for women in quantum

Rachel Sauer — Fri, 25 Apr 2025 19:46:50 +0000

Scholars aim to build community for women in quantum Rachel Sauer Fri, 04/25/2025 - 13:46

Rachel Sauer

Quantum Scholars Emily Jerris and Annalise Cabra started CU Women of Quantum to help women interested in careers in quantum to network and share experiences

First, the good news: Between 1970 and 2022, the percentage of U.S. women workers in STEM jobs grew from 7% to 26%.

The obvious and not-so-good news is that while women represent almost half the U.S. workforce, they hold only a quarter of STEM jobs. And the numbers get even more stark in quantum fields. A 2022 report from the London School of Economics and Political Science found that fewer than 2% of applicants for jobs in quantum fields are female.

Quantum Scholars Annalise Cabra (left) and Emily Jerris (right) gave a presentation about CU Women of Quantum at the December Quantum Scholars meeting attended by CU President Todd Saliman. (Photo: Casey Cass/CU ��ý��)

However, in the 100 years since German physicist Werner Heisenberg submitted his paper “On quantum-theoretical reinterpretation of kinematic and mechanical relationships” to the journal Zeitschrift für Physik, a July 1925 event that is broadly credited with kick-starting the quantum revolution, the possibilities and potential of quantum science and engineering have grown enormously.

Recognizing that potential, a group of ��ý�� scholars wants to help ensure that women participate equally and fully in quantum science and engineering.

CU Women of Quantum, founded last semester by Quantum Scholars Emily Jerris and Annalise Cabra, aims to be a community of support, connection, mentorship and networking for women interested in pursuing careers or research in quantum fields.

“Our primary focus,” Cabra explains, “is just to create a space where we can come together, share our experiences and create relationships that are lasting.”

100 years of quantum

Both Jerris and Cabra say that this is an exciting time to be in quantum science and engineering. Not only did the United Nations declare 2025 as the International Year of Quantum Science and Technology, and not only did Colorado Gov. Jared Polis last week announce the Blueprint for Advancing K–12 Quantum Information Technology, but research happening on the CU ��ý�� campus and in Colorado is swiftly expanding the boundaries of quantum technology.

However, they also add that as exciting as this time is, women in quantum fields still face some of the same roadblocks that women in STEM always have.

“I think if you asked most of the women in the club or just in a STEM major if they’ve had a moment where a peer or coworker has talked down to them or they felt not necessarily fully included in a project because they were the only woman in the group, I think most probably have,” Jerris says. “So, it’s nice to have a space to talk about that—how to navigate situations like that. A lot of us do research, too, and those types of situations are also really prevalent in the research space.”

Jerris and Cabra worked with Michael Ritzwoller, a physics professor of distinction and Quantum Scholars co-founder, and physics Professor Noah Finkelstein to create CU Women of Quantum, which is open to all students, as a place for not only female Quantum Scholars, but for women across campus who are interested in pursuing careers in quantum science, technology or engineering.

Annalise Cabra (left) works with Brooke Nelson (right), a career advisor for the College of Engineering and Applied Sciences, on her resume during a recent CU Women of Quantum meeting.

Supporting women in quantum

One of the group’s aims is creating networking and mentorship opportunities for members by asking professors and women working in quantum fields to speak at group meetings. This has included Alex Tingle, a CU ��ý�� physics alumna and senior technical project engineer at Quantinuum, who was named one of the Wonder Women of the Quantum Industry by the Quantum Daily.

CU Women of Quantum gatherings also focus on skill-building, including a recent meeting at which Brooke Nelson, a career advisor for the College of Engineering and Applied Sciences, gave a presentation on creating and honing a resume.

“One of our goals is to help (CU Women of Quantum members) narrow in on their interests and build connections,” Cabra says. “And then also having opportunities to see how women in their shoes were able to navigate and build careers in quantum. I think it’s important for a lot of women in the field, too, to go back and encourage other women who are just starting out or just getting interested in quantum.”

The members of CU Women of Quantum also get together for study sessions, “because even if we’re not taking the same classes, with other women you can feel more open and not like you’re the outlier in the group.”

Both Cabra, who is graduating next month, and Jerris, who is completing her third year, are interested in pursuing careers in a quantum field, bolstered by the support they’ve found in CU Women of Quantum.

“It’s so fascinating because it’s just so unintuitive,” Cabra says. “It makes your brain think in such crazy ways, from the ways particles behave to the ways stars don’t collapse or do collapse, to parallel universes, and it all goes back to quantum. I think it’s just so exciting to study.”

Jerris adds that often the common perception of quantum science and technology is that “it’s kind of magic or something we don’t totally understand, but we actually do have a pretty good understanding of quantum. We know what’s going on and can model it, and we’re maybe just one step behind with how we can actually manipulate things. So, it’s not magic; it’s something we do know a lot about and we’re learning more every day.”

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Quantum Scholars Emily Jerris and Annalise Cabra started CU Women of Quantum to help women interested in careers in quantum to network and share experiences.

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Top image: Casey Cass/CU ��ý��

Professor John Cumalat wins 2025 Hazel Barnes Prize

Rachel Sauer — Fri, 11 Apr 2025 22:19:58 +0000

Professor John Cumalat wins 2025 Hazel Barnes Prize Rachel Sauer Fri, 04/11/2025 - 16:19

Cumalat ‘literally re-shaped our understanding of the fundamental particles making up the known universe,’ colleagues note

John Cumalat, professor of distinction in the ��ý�� Department of Physics, has been awarded the 2025 Hazel Barnes Prize.

Established in 1991 by former chancellor James Corbridge to honor the late Hazel Barnes, CU ��ý�� professor of philosophy from 1953-86, the $20,000 Hazel Barnes Prize celebrates the enriching interrelationship between teaching and research and is the largest and most prestigious award funded by the university.

“Professor Cumalat is an exemplary educator and researcher whose contributions to his students, this university and the field of physics are highly deserving of recognition,” said Chancellor Justin Schwartz. “His selection as the Hazel Barnes Prize winner reflects his dedication and ingenuity, and I am so proud of all the ways he utilizes these qualities in service to CU ��ý�� and to humanity.”

Cumalat completed his PhD in physics from the University of California Santa Barbara in 1977 and his postdoctoral work with Fermilab in Batavia, Illinois, in 1979. Since joining the CU ��ý�� physics faculty in 1981, he has garnered multiple honors, including the Best Should Teach Award in 2003, the Robert L. Stearns Award in 2010 and the BFA Excellence in Service Award in 2013. He became a professor of distinction in 2014.

“John is an educator in the broadest sense and has had a lasting impact on his students and colleagues. He leads by example, he leads from the front, and he leads with integrity and compassion.”

Best known for his research in particle physics and for his development of state-of-the-art particle-detector technology and instrumentation, Cumalat is a member of five professional organizations: Sigma Xi, the American Association for the Advancement of Science, the American Association of Physics Teachers, the American Astronomical Society and the American Physical Society.

He is also a member of the Compact Muon Solenoid experiment at the Large Hadron Collider at CERN, the current principal investigator of the CU High Energy Physics Department of Energy Grant and the principal investigator of the Professional Research Experience Program with the National Institute of Standards and Technology.

Cumalat has authored or co-authored more than 1,500 publications and has been cited nearly 200,000 times, according to INSPIRE, an online hub that collects scholarly work in the field of high-energy physics. He has also served on several dozen graduate-student committees and on approximately 150 undergraduate-student thesis committees.

In their letters supporting Cumalat’s nomination for the Hazel Barnes Prize, several of his colleagues noted the significance of his contributions to the field of physics.

“John Cumalat has literally re-shaped our understanding of the fundamental particles making up the known universe,” wrote CU ��ý�� Professor of Physics James Nagle. “His research focuses on the fundamental building blocks of matter and his leadership has led to critical advances in our understanding of quarks as well as the discovery of the Higgs boson.”

“John is one of the very best physicists that I know,” said Joel Butler, a distinguished scientist at Fermilab. “He is well-known and greatly respected throughout the U.S. and in the world. I consider it one of the most fortunate aspects of my own career that I have had this long and productive association with him.”

Other colleagues brought attention to Cumalat’s role in expanding and improving physics education at CU ��ý��.

“John’s leadership was critical in the expansion of the number of physics degrees in the College of Arts and Sciences,” said CU ��ý�� Professor of Physics Paul D. Beale. “I believe that John’s most important and lasting contribution to teaching and learning is his leadership in expanding the number of physics students engaged in undergraduate research, especially conducting honors research projects with members of the physics faculty and other scientists and engineers.”

“John is an educator in the broadest sense and has had a lasting impact on his students and colleagues,” said Patricia Rankin, former physics professor at CU ��ý�� and current chair of the Physics Department at Arizona State University. “He leads by example, he leads from the front, and he leads with integrity and compassion.”

“I am honored to be selected by previous Hazel Barnes winners as the 2025 Hazel Barnes Prize winner,” says Cumalat. “I particularly value my colleagues in physics nominating me for the award and for soliciting external supporting letters from students and national and international colleagues. I am humbled by the entire process.”

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Cumalat ‘literally re-shaped our understanding of the fundamental particles making up the known universe,’ colleagues note.

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CU alum Stephen Koehler enjoys high-flying career

Rachel Sauer — Wed, 09 Apr 2025 18:14:40 +0000

CU alum Stephen Koehler enjoys high-flying career Rachel Sauer Wed, 04/09/2025 - 12:14

Bradley Worrell

The ROTC cadet and physics major turned naval aviator turned admiral was appointed commander of the U.S. Pacific Fleet in early 2024

��ý�� grad Stephen T. Koehler (Phys’86) has a really, really big job.

How big?

It covers an area encompassing 100 million square miles—roughly half the earth’s surface—from Antarctica to the Artic Circle and from the western U.S. coast to the Indian Ocean. The job includes oversight of about 200 ships, 1,500 aircraft and 150,000 military and civilian personnel.

CU ��ý�� grad and U.S. Navy Admiral Stephen Koehler (Phys’86) was selected as the commander of the U.S. Pacific Fleet in April 2024, following a succession of leadership positions in the Navy.

Admiral Koehler is the commander of the U.S. Pacific Fleet, a position he assumed in April 2024 after a series of successive leadership positions during his 40-year career in the Navy. He became the 36th commander since Admiral Chester Nimitz assumed command on Dec. 31, 1941, at Pearl Harbor.

Koehler’s ascension to a top leadership post in the Navy is perhaps even more notable given that his initial goal was modest: He wanted to fly jets like his dad, who was a Navy fighter pilot.

“Honestly, I didn’t know I would stay in the Navy this long,” he says. “But from a very young age, I watched my dad go to work to fly airplanes and I just thought he was so cool, and I remember thinking, ‘I want to do what he does.’ My dad loved being a fighter pilot. So, I knew I wanted to fly jets and land them on ships.”

After being commissioned in 1986 through the Naval Reserve Officers’ Training Corps (ROTC) program at CU ��ý��, Koehler became a naval aviator in 1989 and went on to fly more than 3,900 hours in the F-14 Tomcat and F-18 Hornet, with 600 carrier landings.

Koehler subsequently served in leadership positions that included commanding a fighter squadron, serving as the captain of a nuclear aircraft carrier, commander of a carrier strike group, commander of the U.S. Third Fleet and director for strategy, plans and policy for the Joint Staff in Washington, D.C., which was his last post.

Recently, Koehler spoke with Colorado Arts and Sciences Magazine about how his time at CU ��ý�� helped him prepare for his career in the Navy, what it was like to be a naval aviator and what his job entails as commander of the U.S. Pacific Fleet. His responses have been lightly edited and condensed for space.

Question: Why did you decide to attend CU ��ý��? And why did you choose to get your degree in physics?

Koehler: The main reason I ended up applying to CU ��ý�� was that the summer before my senior year in high school, I was taking a Greyhound bus around the country, rock climbing with my cousin. We stopped in ��ý�� for a week and we stayed with this guy who was a friend-of-a-friend type thing. We climbed nearly every day.

One day it rained bad enough we couldn’t climb, so we heard there was a campus in town and we decided maybe we should walk around it. I picked up an application at the UMC (University Memorial Center), where it stayed in my backpack for the rest of the summer. Later, I filled it out and sent it in, and then I got accepted.

I saw CU had a physics major and it had ROTC, so I said, ‘I’ll give it a go.’

Admiral Stephen Koehler (right) with his father, who was also a naval aviator, following the younger Koehler’s commissioning in 1986 during a ceremony held at Old Main on the CU ��ý�� campus.

I knew I wanted to be as competitive as I could going into Navy flight school. And initially, I thought I might want to be a test pilot—and I knew you had to have hard-science capability for that, so that’s why I majored in physics. I was not a natural physics guy, so it was a slog for me, but I did it to keep my options open.

Question: Do you feel like your time at CU ��ý�� helped prepare you for entering the Navy?

Koehler: Yes. Certainly, the ROTC piece provided an understanding of the Navy even beyond what I learned as a child of a Navy parent, and it taught me about leadership.

The physics background proved very beneficial, not only for flight school, but it led to me being selected to be a nuclear-trained officer. There is a technical degree that’s required to do that, and so, yes, my time at CU set me up for that.

Question: When people think of naval aviators, they likely think of the movie Top Gun. What is it like to be a naval aviator in real life?

Koehler: People who watch Top Gun think you are all tan and spend your days playing volleyball at the beach, or they watch Top Gun: Maverick and think you’re all tan and you play football on the beach (laughs). And arguably, I would love to do some of that, but being a carrier-based fighter pilot is about being steeped in professionalism.

Naval aviators train and train so that they make the extremely difficult look easy and routine when it’s not. It takes skill to land a plane on a pitching (ship) deck, day or night, and it takes dedication to be a fighter pilot, to make sure that you are better than the adversary. It’s about having a warrior mindset and making sure you are good at it, because you’ve got to be better than your opponent.

Question: What is your call sign and how did you get it?

Koehler: It’s Web. I won’t go into the whole boring story, but it’s short for Webster’s Dictionary. I received it during a very public display for a lack of spelling prowess (laughs). And I’m actually not a bad speller, but I was on that day.

I wish it (the call sign) was for something cool, like ‘spiderweb,’ or ‘he’s on the web.’ That’s probably half the reason it stuck—because it sounds cool even though it’s not (laughs). …

Now, even at this level, people call me by that name instead of my (given) name. I was sitting in the situation room in the White House in my last job and people would call me Web—not Steve or Admiral Koehler. They would be like, ‘Hey, Web, what do you think about this?’ So, that’s just what ends up happening.

Question: How does one go from being a naval aviator to a command where you are responsible for hundreds of ships and planes and tens of thousands of sailors?

Koehler: So, it’s a process. The first step of it is staying in the Navy and being promoted to the command of a squadron, which is 12 planes and about 250 people. You’re evaluated and then there’s normally two paths after that. You either go the nuclear power route, which means you learn to drive aircraft carriers, or you stay in the air wing and you’re in command of an air wing on a carrier.

The U.S. Pacific Fleet (a portion of which is pictured here) encompasses 100 million square miles from Antarctica to the Arctic circle and from the west coast of the United States into the Indian Ocean. The U.S. Pacific Fleet consists of approximately 200 ships, 1,500 aircraft and 150,000 military and civilian personnel. (Photo: U.S. Navy)

I was chosen to go the nuclear power route, so my physics degree proved useful. I went to nuclear power school and then I was the No. 2 guy on an aircraft carrier, the USS Carl Vinson. I went on to command the USS Bataan, which is an amphibious assault ship, and then I was selected to be the captain of a nuclear aircraft carrier for two and a half years, which was the USS Dwight D. Eisenhower.

Pending your performance and time in service, you may be selected to the rank of rear admiral (or flag rank). If you are not selected, there’s mandatory retirement at 30 years.

I was selected after my command of the aircraft carrier and have progressed through operational and staff command that yielded additional flag rank promotions. There was a decision by Naval leadership at some point to promote me to full admiral and select me to be the Pacific Fleet commander. So, it was a natural progression, and I’m very honored to be here.

Question: Can you share the scope of your duties as Pacific Fleet commander and the role the position plays in the world today?

Koehler: The scope and scale of the Pacific Fleet, of the area I’m responsible for as far as naval interests, is from the coast of California to the west coast of India, and Antarctica to the Arctic. It’s a huge area. …

The Pacific Fleet command is of vital importance to national security, resulting from the economic ties and the commerce that travels on the ocean, for which I am responsible on the Navy side to be ready to respond. There’s just a real importance to the job and there’s a lot of work to do out there. We must continue to improve our position and capability to maintain and ensure the freedom of the seas. The intent is a ‘free and open Indo-Pacific,’ with freedom of commerce, sovereign rights and the ability to sail and operate in accordance with international law, and those things the Pacific Fleet works continuously to provide.

Question: What is the best thing about being Pacific Fleet commander? And what is the most difficult thing?

Koehler: The best thing is having the opportunity to lead all of these sailors. With sailors and civilians, there is on the order of 150,000 of them working toward a common goal, which is to achieve our national objectives. The opportunity to go out and see them and lead them is the best. That also delves into the challenge, which is that it’s a large scale and scope of operations that I oversee. The challenge is to be able to get out and see them as much as I would like and revel in the success they have. They are a pretty amazing group of people who do some outstanding work.

Admiral Stephen Koehler salutes during a 2024 ceremony at Pearl Harbor. (Photo: U.S. Navy)

Question: Do you still get to fly jets?

Koehler: I wish I did. I did get to fly as an admiral when I was the carrier strike group commander and we were on deployment in 2017. I got my last carrier landing in April of 2018.

Flying is a young person’s game. Not that I wouldn’t continue to go flying … but there’s no time to maintain my currency and while it would be fun for me, I’m not sure it would be the best use of my time now.

Question: With your four decades of service in the Navy, are there a few standout moments in your career?

Koehler: That’s a really hard one. First of all, it’s been 40 years, but it doesn’t seem like it. I got to Colorado (as a freshman) in 1982, and it feels like I was just there. …

There are all sorts of things I remember. Taking command of an aircraft carrier, with 3,000 people assigned to it, and with the air wing it’s 5,000 people. That was the first huge command for me, and you have all of these sailors that you get the privilege to lead.

Certainly, the news that I was going to be Pacific Fleet commander was memorable. That was something I would never expect. It’s the honor of a lifetime to do that, and to follow in the footsteps of some amazing people, starting with Admiral Nimitz in World War II.

Another standout thing was being the demonstration pilot for the F-14 at air shows and having the opportunity to fly in front of my family at the Miramar Air Show in 1996. It was an amazing day to fly for my dad that day.

Looking back, there are many memories, and it’s been nothing but a really fun, challenging, rewarding experience. I have been able to enjoy it with my wife, Gina, who’s been with me since college, where we met in 1983 in ��ý�� in the Baker Hall dorm. She’s been with me the whole time, which has just been amazing.

Question: Anything else you would like to add?

Koehler: Go Buffs!

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The ROTC cadet and physics major turned naval aviator turned admiral was appointed commander of the U.S. Pacific Fleet in early 2024.

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Top image: Admiral Stephen Koehler (green flight suit) was designated a naval aviator in 1989 and flew more than 3,900 hours in the F-14 Tomcat and F-18 Hornet, with 600 carrier landings.

Two CU ��ý�� scientists win prestigious honor

Clint Talbott — Thu, 27 Mar 2025 14:00:00 +0000

Two CU ��ý�� scientists win prestigious honor Clint Talbott Thu, 03/27/2025 - 08:00

Ivan Smalyukh and Tom Blumenthal are named fellows of the American Association for the Advancement of Science

Two ��ý�� professors have been named 2024 fellows of the American Association for the Advancement of Science (AAAS), the group announced today.

Ivan Smalyukh (left) and Tom Blumenthal

Ivan Smalyukh, professor of physics, and Thomas Blumenthal, professor emeritus of molecular, cellular and developmental biology (MCDB), are among the 471 scientists, engineers and innovators who have been recognized for scientifically and socially distinguished achievements by the world’s largest general scientific society and publisher of the Science family of journals.

This year’s class of fellows “is the embodiment of scientific excellence and service to our communities,” said Sudip S. Parikh, AAAS chief executive officer and executive publisher of the Science family of journals.

“At a time when the future of the scientific enterprise in the U.S. and around the world is uncertain, their work demonstrates the value of sustained investment in science and engineering.”

“I am pleased to see this well-deserved recognition of Professor Smalyukh and Professor Blumenthal. Their accomplishments highlight the remarkable scientific advances occurring at CU,” said Irene Blair, dean of natural sciences.

Smalyukh’s research encompasses different branches of soft-condensed-matter and optical physics, including chiral phenomena, knot theory, laser trapping and imaging techniques, molecular and colloidal self-assembly, fundamental properties of liquid crystals, polymers, organic and nano photovoltaics, nano-structured and other functional materials, as well as their photonic and electro-optic applications.

“We aspire to uncover very fundamental physical principles underpinning phenomena and properties of materials and other physical systems,” Smalyukh noted. “At the same time, we also apply this fundamental knowledge to contribute to a sustainable future via designing artificial forms of meta matter needed to reduce the growing energy demand and slow down climate change.”

Smalyukh earned BS and MS degrees with highest honors in 1994 and 1995 from Lviv Polytechnic National University in Ukraine. He earned a PhD in chemical physics in 2003 from Kent State University in Ohio.

He joined the CU ��ý�� faculty in 2007. In addition to serving as a professor of physics, he holds a courtesy appointment as a professor in the Department of Electrical, Computer and Energy Engineering, is a fellow in the Materials Science Engineering Program and is a fellow of the Renewable & Sustainable Energy Institute (RASEI), a joint institute of NREL and CU ��ý��.

Among other awards, Smalyukh has been named a fellow of the American Physical Society and has won the Department of Energy Early Career Research Award and a National Science Foundation CAREER Award.

Smalyukh said he is honored by the selection: “I am especially grateful to many students and postdocs doing interdisciplinary physics-centered research together with me over nearly 20 years at CU ��ý��.”

Blumenthal’s lab has studied a variety of important problems in molecular biology, including regulation of gene expression, mechanisms of RNA splicing and arrangement of genes on chromosomes. His lab is responsible for discovering that eukaryotes can have operons for identifying the protein that is responsible for recognizing the 3’ splice site and for a variety of other esoteric findings.

He has also studied how the tiny extra chromosome responsible for Down syndrome changes the levels of many proteins, even though most of those proteins are not encoded on the extra chromosome.

Blumenthal earned a BA in biology from Antioch College in 1966 and a PhD in genetics from Johns Hopkins University in 1970. He did postdoctoral research at Harvard University from 1970-73, then spent 23 years at the Biology Department at Indiana University Bloomington and nine years at the University of Colorado School of Medicine. He joined CU ��ý��’s faculty in 2006 and served as professor and chair of MCDB.

Among other awards, Blumenthal was recognized as a fellow by the American Academy of Arts and Sciences in 2010 and won a fellowship from the John Simon Guggenheim Memorial Foundation in 1980.

Lee Niswander, professor and chair of molecular, cellular and developmental biology, said the department is thrilled about Blumenthal’s recognition. “Tom’s research program related to RNA processing and gene regulation, as well as his strong leadership of MCDB, have left an enduring mark on science and MCDB.

“Tom continues to engage with astute questions and the endowment of a lecture series related to RNA biology through a partnership between CU ��ý�� and CU Anschutz.”

Counting Blumenthal and Smalyukh, 81 CU ��ý�� professors have been named AAAS fellows since 1981.

Ivan Smalyukh and Tom Blumenthal are named fellows of the American Association for the Advancement of Science.

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