Events at Physics |
Events During the Week of May 26th through June 2nd, 2024
Monday, May 27th, 2024
- Academic Calendar
- Memorial Day observed
- Abstract: *Note: actual end time may vary.* URL:
Tuesday, May 28th, 2024
- Academic Calendar
- 3-week summer session begins
- Abstract: *Note: actual end time may vary.*
- Department Meeting
- CLOSED Department Meeting
- Time: 12:15 pm - 1:15 pm
- Place: VIRTUAL - link to be sent.
- Speaker: Mark Eriksson, UW - Madison
- Closed meeting to discuss personnel matters—pursuant to Section 19.85(1)(c) of the Wisconsin Open Meetings Law
- Host: Mark Eriksson
Wednesday, May 29th, 2024
- Department Meeting
- CLOSED Department Meeting
- Time: 12:15 pm - 1:15 pm
- Place: VIRTUAL - link to be sent.
- Speaker: Mark Eriksson, UW - Madison
- Closed meeting to discuss personnel matters—pursuant to Section 19.85(1)(c) of the Wisconsin Open Meetings Law
- Host: Mark Eriksson
- Summer Recess
- Time: 12:30 pm - 1:00 pm
- Place: Bascom Hill outside Birge
- Speaker: Sharon Kahn
- Abstract: Come take a break and play from 12:30-1 on Bascom Hill (outside of Birge)! Some of us will be walking up, leaving from the courtyard between Chamberlin and Sterling ~12:25 – feel free to walk with us!
Cornhole, ladder toss, frisbee, juice boxes. . . .
Hope you’ll join us! Thursday, May 30th, 2024
- R. G. Herb Condensed Matter Seminar
- Resonant Bloch oscillations in transmons embedded in high-impedance circuits
- Time: 10:00 am - 6:00 pm
- Place: 5310 Chamberlin
- Speaker: Benjamin Remez, Yale University
- Abstract: Superconducting circuits offer a unique setting to explore the strong-coupling counterpart to standard electrodynamics, with which a variety of quantum devices can be realized. A prerequisite for such strong coupling is a medium with very high characteristic impedance, which can be achieved by recently developed Josephson junction array transmission lines, dubbed “super-inductors”. These provide both the high impedance needed for strong quantum fluctuations, and photon modes with which to probe a quantum device, such as a small Josephson junction – i.e. a superconducting qubit. In this high-impedance environment, current through the junction is suppressed by Coulomb blockade, and is accompanied by Bloch oscillations analogous to those in crystalline systems. However, the interplay between Bloch oscillations and environmental photon resonances remains largely unexplored. In this talk I will give a brief introduction to circuit electrodynamics, superconducting qubits, and the superconductor-insulator transition. Then I will develop a model for Bloch oscillations in a transmon-type qubit placed in a high-impedance cavity [1]. The latter’s discrete spectrum will cause resonances in the voltage–current relation and the spectrum of photons radiated by the transmon. The transmon also scatters cavity photons inelastically; I will show a novel anti-Stokes-like process whereby photons gain a Bloch oscillation quantum. These signatures show how Bloch oscillations leave fingerprints across disparate energy scales. Time permitting, I will discuss how our model extend to treating dual Bloch-Shapiro steps in shunted transmons, with applications to quantum metrology [2]. [1] B. Remez, V. D. Kurilovich, M. Rieger, and L. I. Glazman, Bloch Oscillations in a Transmon Embedded in a Resonant Electromagnetic Environment, arXiv:2403.04623. [2] V. D. Kurilovich, B. Remez, and L. I. Glazman, Quantum Theory of Bloch Oscillations in a Resistively Shunted Transmon, arXiv:2403.04624.
- Host: Roman Kuzmin
Friday, May 31st, 2024
- No events scheduled