Events
Upcoming Events
Fall 2025 CUbit Quantum Seminar Series
Supported by the CUbit Quantum Initiative at CU 抖阴传媒在线
- Location: CASE Building 鈥 Chancellor鈥檚 Hall, CU 抖阴传媒在线
- Light refreshments: 3:30 p.m.
- Talk begins: 4:00 p.m.
Matt Eichenfield (CU 抖阴传媒在线): Piezo-Optomechanics
Abstract
The quantum 2.0 revolution is well underway, with a tantalizing future just over the horizon wherein computing, networking, sensing, and even time-keeping will be unimaginably more capable than they are today. The promise of this future hinges on the ability to control, entangle, and measure both individual qubits and large systems of them. Many of the most promising physical qubit systems being developed for these purposes are atomic in nature, i.e. trapped neutral atoms, trapped ions, and artificial atoms in crystals. These atomic qubits interact almost exclusively with visible or even UV photons, requiring incredibly precise phase, frequency, and amplitude conditioning of and modulation of those photons to control them. While these systems have advanced by leaps and bounds over the last decade by focusing on small-scale implementations with a few to a few thousand qubits using 鈥渢abletop鈥 optical controls, all of them are now bottlenecked by the inability to scale these controls to the qubit counts required for true scientific, technological, and societal utility, which will require several orders of magnitude more qubits with no degradation in performance.
In this talk, I will describe my group鈥檚 past, present, and future efforts to clear this bottleneck by hijacking the most scalable manufacturing processes known to man鈥攖hose used to manufacture complimentary metal-oxide semiconductor (CMOS) electronic integrated circuits鈥攖o make very large-scale optical control circuits. To do this, we have developed a novel photonic integrated circuit (PIC) architecture that uses integrated piezoelectric force actuators to deform dielectric waveguides made of common CMOS insulators: silicon nitride, silicon dioxide, and aluminum oxide. I will show that this piezo-optomechanical PIC architecture provides electronic control of all the necessary degrees of freedom for photons across the entire visible spectrum and far enough into the ultraviolet to address the most important qubit species. Critically, the PIC platform has high modulation bandwidth, works from room temperature to cryogenic temperatures, handles optical power up to (at least) several watts, and has low power dissipation, self-heating, and cross-talk, paving the way towards utility scale quantum information processing with atomic qubits.
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In this talk, I will describe my group鈥檚 past, present, and future efforts to clear this bottleneck by hijacking the most scalable manufacturing processes known to man鈥攖hose used to manufacture complimentary metal-oxide semiconductor (CMOS) electronic integrated circuits鈥攖o make very large-scale optical control circuits. To do this, we have developed a novel photonic integrated circuit (PIC) architecture that uses integrated piezoelectric force actuators to deform dielectric waveguides made of common CMOS insulators: silicon nitride, silicon dioxide, and aluminum oxide. I will show that this piezo-optomechanical PIC architecture provides electronic control of all the necessary degrees of freedom for photons across the entire visible spectrum and far enough into the ultraviolet to address the most important qubit species. Critically, the PIC platform has high modulation bandwidth, works from room temperature to cryogenic temperatures, handles optical power up to (at least) several watts, and has low power dissipation, self-heating, and cross-talk, paving the way towards utility scale quantum information processing with atomic qubits.
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Live only; no recording will be available
Past Events
Fall 2025 Seminars
- Peter Maurer (University of Chicago) Monday, September 22, 2025
- Mohammad Mirhosseini (Caltech) Monday, October 27, 2025
- Soonwon Choi (MIT) Monday, November 10, 2025
Spring 2025 Seminars
- Steven Girvin (Yale) Tuesday, April 29
- Johannes Zeiher (Max-Planck Institute of Quantum Optics) Thursday, March 20, 2025
- Dr. John Bowers, (University of California) Santa Barbara February 10th, 2025
Fall 2024 Seminars
- Dr. Lawrence Cheuk, (Princeton) 听December 9, 2024
- Professor Peter Rakich, (Yale) 听November 4, 2024
- Dr. Michael Foss-Feig, (Quantinuum) 听October 7, 2024
Spring 2024 Seminars
- Dr. Jeff Thompson (Princeton) April 30, 2024
- Dr.Amir Safavi-Naeni, (Stanford) April 16, 2024
- Antoine Browaeys (Institut d鈥橭ptique) February 27, 2024
Fall 2023 Seminars
- Leticia Tarruell (Ultracold Quantum Gases, ICFO, Barcelona Institute of Science and Technology)December 11, 2023
- John Preskill (Caltech) November 13, 2023
- Christopher Monroe (Duke) October 23, 2023
Spring 2023 Seminars
- Mikhail Lukin (Harvard)听May 1, 2023听
- Jon Simon (Stanford) April 10,听2023听
- Amir Safavi-Naeini (Stanford) March 13,听2023听CANCELED due to illness.
- Sabrina Maniscalco (University of Helsinki) February 6,听2023听
- Nathalie de Leon (Princeton University)January 30,听2023听
Fall 2022 Seminars
- John Martinis (UC Santa Barbara)December 12, 2022
- Ana Garcia (Columbia University)December 5, 2022
- Ferdinand Kuemmeth (Niels Bohr Institute)November 7, 2022
- Kartik A. Srinivasan听(NIST) October 24, 2022
- Mark Eriksson (University of Wisconsin-Madison) October 17, 2022听
Quantum Computing Using Electron Spins in Silicon - Eugene Simon Polzik听(Niels Bohr Institute) September 26, 2022听
Quantum Physics with Macroscopic Objects - Rahul Nandkishore (CU 抖阴传媒在线)听August 29, 2022听
Fracton Dynamics
Spring 2022 Seminars
- Hong Tang (Yale)听April 25, 2022听
Integrated Nonlinear Photonics for Quantum Frequency Conversion - Marko Loncar (Harvard)听April 18, 2022听
New Opportunities with Old Materials - John Doyle (Harvard)March 28, 2022
Cold and Ultra-Cold Molecules for Quantum Science - Krister Shalm (NIST)February 14, 2022
Quantum Entropy as a Service听
Fall 2021 Seminars
- Jelena Vuckovic (Stanford) December 6, 2021
Scalable Semiconductor Quantum Systems听 - Ben Bloom (Atom Computing)听November 8, 2021
Optically Trapped Atomic Qubits听 - Will Oliver (MIT)October 11, 2021
Giant Artifical Atoms and Waveguide QED听 - Scott Diddams (NIST)听September 13, 2021
Optical Frequency Combs 2.0听
Spring 2020 Seminars
- John Martinis (UCSB,听Google)听February 10, 2020
- Alexander Gaeta (Columbia)听Scheduled February 24, 2020
- Aram Harrow (MIT)听Scheduled March 9, 2020, postponed
- Jelena Vuckovic (Stanford)听Scheduled April 13, 2020, postponed
- John Doyle (Harvard)听Scheduled April 20, 2020, postponed
Spring 2019 Seminars
- Ania Jayich (UCSB)听February 26, 2019
- Andrei Faraon (Caltech)听March 12, 2019
- Markus Greiner (Harvard)听March 19, 2019
- Vladan Vuletic (MIT)听April 2, 2019
- Kai-Mei Fu (UW Seattle)听April 30, 2019
- Jack Harris (Yale)听May 14, 2019
- Jonathan Home (ETH)听May 14, 2019
Fall 2019 Seminars
- Nergis Mavalvala (MIT)听September 30, 2019
- Dan Oron (Weizmann)听October 28, 2019
- Franco Wong (MIT)听November 4, 2019
- David Schuster (Chicago)听November 18, 2019
- Andrew Wilson (NIST)听December 2, 2019
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