Probing Two Driven Double Quantum Dots Strongly Coupled to a Cavity,Physical Review Letters

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Probing Two Driven Double Quantum Dots Strongly Coupled to a Cavity
Physical Review Letters ( IF 8.1 ) Pub Date : 2023-06-09 , DOI: 10.1103/physrevlett.130.233602
Si-Si Gu _{1,

2} , Sigmund Kohler ₃ , Yong-Qiang Xu _{1,

2} , Rui Wu _{1,

2} , Shun-Li Jiang _{1,

2} , Shu-Kun Ye _{1,

2} , Ting Lin _{1,

2} , Bao-Chuan Wang _{1,

2} , Hai-Ou Li _{1,

2,

4} , Gang Cao _{1,

2,

4} , Guo-Ping Guo _{1,

2,

4,

5}

Affiliation

We experimentally and theoretically study a driven hybrid circuit quantum electrodynamics (cQED) system beyond the dispersive coupling regime. Treating the cavity as part of the driven system, we develop a theory applicable to such strongly coupled and to multiqubit systems. The fringes measured for a single driven double quantum dot (DQD)-cavity setting and the enlarged splittings of the hybrid Floquet states in the presence of a second DQD are well reproduced with our model. This opens a path to study Floquet states of multiqubit systems with arbitrarily strong coupling and reveals a new perspective for understanding strongly driven hybrid systems.

中文翻译：

探测强耦合到腔体的两个驱动双量子点

我们从实验和理论上研究了超越色散耦合机制的驱动混合电路量子电动力学（cQED）系统。将腔体视为驱动系统的一部分，我们开发了一种适用于此类强耦合和多量子位系统的理论。我们的模型很好地再现了在单驱动双量子点 (DQD) 腔设置下测量的条纹以及在存在第二个 DQD 的情况下混合 Floquet 态的放大分裂。这开辟了一条研究具有任意强耦合的多量子位系统的 Floquet 状态的道路，并揭示了理解强驱动混合系统的新视角。

更新日期：2023-06-09

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