Observation of the Three-State Dressed States in Circuit Quantum Electrodynamics

作     者：K. Koshino H. Terai K. Inomata T. Yamamoto W. Qiu Z. Wang Y. Nakamura 

作者机构：College of Liberal Arts and Sciences Tokyo Medical and Dental University Ichikawa Chiba 272-0827 Japan National Institute of Information and Communications Technology (NICT) Kobe Hyogo 651-2492 Japan RIKEN Center for Emergent Matter Science (CEMS) 2-1 Hirosawa Wako Saitama 351-0198 Japan Smart Energy Research Laboratories NEC Corporation Tsukuba Ibaraki 305-8501 Japan Research Center for Advanced Science and Technology (RCAST) The University of Tokyo Meguro-ku Tokyo 153-8904 Japan 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2013年第110卷第26期

页      面：263601-263601页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Japan Society for the Promotion of Science, JSPS, (25400417, 25420352) Japan Society for the Promotion of Science, JSPS 

主　　题：QUANTUM electrodynamics QUBITS ATTENUATION (Physics) GAIN measurement MICROWAVE amplifiers DRESSED states (Quantum optics) 

摘      要：We have investigated the microwave response of a transmon qubit coupled directly to a transmission line. In a transmon qubit, owing to its weak anharmonicity, a single driving field may generate dressed states involving more than two bare states. We confirmed the formation of three-state dressed states by observing all of the six associated Rabi sidebands, which appear as either amplification or attenuation of the probe field. The experimental results are reproduced with good precision by a theoretical model incorporating the radiative coupling between the qubit and the microwave.