A team led by Prof. Guo Guoping and Prof. Cao Gang from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), worked together with Sigmund Kohler from the Materials Science Institute of Madrid to create a response theory relevant for strongly coupled and
, worked together with Sigmund Kohler from the Materials Science Institute of Madrid to create a response theory relevant for strongly coupled and multiqubit systems. Their research has recently been published in the journalSemiconductor quantum dot strongly coupled to microwave photons is the key to investigate light-matter interactions. In previous studies, the team used a high-impedance super-conducting resonant cavity to implement the strong coupling of the QD-cavity hybrid system.
Therefore, researchers developed a new response theory that treats the cavity as a part of the driven system, as opposed to the existing theory. Using this theory, they successfully simulated and interpreted the signals in the experiment, and further investigated the case of a two-DQD-cavity hybrid system under periodic driving.
This study blazed a trail for understanding periodically driven QD-cavity hybrid systems. Besides, the theoretical approach developed is not only applicable to hybrid systems with different coupling strength but also can be extended to multiqubit systems. Reference: “Probing Two Driven Double Quantum Dots Strongly Coupled to a Cavity” by Si-Si Gu, Sigmund Kohler, Yong-Qiang Xu, Rui Wu, Shun-Li Jiang, Shu-Kun Ye, Ting Lin, Bao-Chuan Wang, Hai-Ou Li, Gang Cao and Guo-Ping Guo, 9 June 2023,
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