Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session K48: Strongly Driven Superconducting Systems
3:00 PM–5:48 PM,
Tuesday, March 5, 2024
Room: 200E
Sponsoring
Unit:
DQI
Chair: Antoine Brillant, University of Chicago
Abstract: K48.00005 : Investigating readout-induced state transitions in a multimode Josephson circuit*
3:48 PM–4:00 PM
Presenter:
Wei Dai
(Yale University)
Authors:
Wei Dai
(Yale University)
Sumeru Hazra
(Yale University)
Xu Xiao
(Yale University)
Jayameenakshi Venkatraman
(Yale University)
Zhixin Wang
(Yale University)
Pranav D Parakh
(Yale University)
Daniel K Weiss
(Yale University)
Luigi Frunzio
(Yale University)
Michel H Devoret
(Yale University)
We extend these investigations into a superconducting artificial molecule consisting of two non-linear modes [3]. One of the modes has purely non-linear coupling to the readout resonator, serving as a transmon with intrinsic Purcell protection and direct readout access. The other mode mediates this non-linear coupling. We will present experimental results and preliminary theoretical understanding of the readout-induced state transitions of both types. We explain how our analysis applies to a wide choice of parameters for such multimode Josephson circuits.
[1] Thorbeck et al. arXiv:2305.10508 (2023)
[2] Sank et al. PRL 117, 190503 (2016)
[3] Gambetta et al., PRL 106, 030502 (2011)
*Work supported by: ARO, AFOSR, DOE, NSF and YINQE
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