Collective Microwave Response for Multiple Gate-Defined Double Quantum Dots

被引：4

作者：

Lin, Ting ^{[1
,2
]}

Gu, Si-Si ^{[1
,2
]}

Xu, Yong-Qiang ^{[1
,2
]}

Jiang, Shun-Li ^{[1
,2
]}

Ye, Shu-Kun ^{[1
,2
]}

Wang, Bao-Chuan ^{[1
,2
]}

Li, Hai-Ou ^{[1
,2
]}

Guo, Guang-Can ^{[1
,2
,3
]}

Zou, Chang-Ling ^{[1
,2
,3
]}

Hu, Xuedong ^{[4
]}

Cao, Gang ^{[1
,2
,3
]}

Guo, Guo-Ping ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Univ Sci & Technol China, Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China

[2] Chinese Acad Sci, Univ Sci & Technol China, Ctr Excellence Quantum Informat & Quantum Phys, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, Hefei Natl Lab, Hefei 230088, Peoples R China

[4] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA

来源：

NANO LETTERS | 2023年 / 23卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Semiconductor qubit; circuit quantum electrodynamics (QED); semiconductor quantum dot; scalable semiconductor-based circuit QED architectures; SINGLE-ELECTRON; QUBITS; SILICON;

D O I：

10.1021/acs.nanolett.3c00036

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We fabricate and characterize a hybrid quantum device that consists of five gate-defined double quantum dots (DQDs) and a high impedance NbTiN transmission resonator. The controllable interactions between DQDs and the resonator are spectroscopically explored by measuring the microwave transmission through the resonator in the detuning parameter space. Utilizing the high tunability of the system parameters and the high cooperativity (Ctotal > 17.6) interaction between the qubit ensemble and the resonator, we tune the charge-photon coupling and observe the collective microwave response changing from linear to nonlinear. Our results present the maximum number of DQDs coupled to a resonator and manifest a potential platform for scaling up qubits and studying collective quantum effects in semiconductor-superconductor hybrid cavity quantum electrodynamics systems.

引用

页码：4176 / 4182

页数：7

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