journal article·2021-05-28Open access

Floquet state depletion in ac-driven circuit QED

Ming-Bo Chen, Bao-Chuan Wang, Sigmund Kohler, Yuan Kang, Ting Lin, Si-Si Gu, Hai-Ou Li, Guang-Can Guo, Xuedong Hu, Hong-Wen Jiang, Gang Cao, Guo-Ping Guo

Physical Review B· Volume 103· Issue 20

Abstract

We perform Floquet spectroscopy in a GaAs double quantum dot system coupled to a high-impedance superconducting resonator. By applying microwave-induced consecutive passages under a double-resonance condition, we observe Landau-Zener-St\"uckelberg-Majorana interference patterns that stem from a cavity-assisted interference pattern modified by the depletion of the ground state. Our experimental results reveal the stationary state behavior of a strongly driven two-level system and are consistent with the simulations based on our theoretical model. This study provides an excellent platform for investigating the dynamics of Floquet states in the presence of strong driving.
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Research context

OpenAlex topics: Quantum and electron transport phenomena · Quantum Information and Cryptography · Topological Materials and Phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Lab of Quantum Information, CAS, University of Science and Technology of China, Hefei 230026, China

CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China

Instituto de Ciencia de Materiales de Madrid, CSIC, E-28049 Madrid, Spain

Department of Physics, University at Buffalo, SUNY, Buffalo, New York 14260-1500, USA

Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA

Origin Quantum Computing Company, Hefei, Anhui 230026, China

Funding

National Basic Research Program of China · National Natural Science Foundation of China · Chinese Academy of Sciences · Consejo Superior de Investigaciones Científicas · Army Research Office · University of Science and Technology of China

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