Tunable coupling between Xmon qubit and coplanar waveguide resonator

doi:10.1088/1674-1056/28/8/080305

中国物理B ›› 2019, Vol. 28 ›› Issue (8): 80305-080305.doi: 10.1088/1674-1056/28/8/080305

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Tunable coupling between Xmon qubit and coplanar waveguide resonator

He-Kang Li(李贺康), Ke-Min Li(李科敏), Hang Dong(董航), Qiu-Jiang Guo(郭秋江), Wu-Xin Liu(刘武新), Zhan Wang(王战), Hao-Hua Wang(王浩华), Dong-Ning Zheng(郑东宁)

1 Institute of Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China;
2 Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China;
3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
4 CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2019-04-10 修回日期:2019-05-22 出版日期:2019-08-05 发布日期:2019-08-05
通讯作者: Hao-Hua Wang, Dong-Ning Zheng E-mail:hhwang@zju.edu.cn;dzheng@iphy.ac.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0304300 and 2016YFA0300600), the National Natural Science Foundation of China (Grant Nos. 11725419 and 11434008), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB28000000).

Tunable coupling between Xmon qubit and coplanar waveguide resonator

He-Kang Li(李贺康)^1,3, Ke-Min Li(李科敏)², Hang Dong(董航)², Qiu-Jiang Guo(郭秋江)², Wu-Xin Liu(刘武新)², Zhan Wang(王战)^1,3, Hao-Hua Wang(王浩华)², Dong-Ning Zheng(郑东宁)^1,3,4

1 Institute of Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China;
2 Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China;
3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
4 CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2019-04-10 Revised:2019-05-22 Online:2019-08-05 Published:2019-08-05
Contact: Hao-Hua Wang, Dong-Ning Zheng E-mail:hhwang@zju.edu.cn;dzheng@iphy.ac.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0304300 and 2016YFA0300600), the National Natural Science Foundation of China (Grant Nos. 11725419 and 11434008), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB28000000).

摘要/Abstract

摘要：

Realization of a flexible and tunable coupling scheme among qubits is critical for scalable quantum information processing. Here, we design and characterize a tunable coupling element based on Josephson junction, which can be adapted to an all-to-all connected circuit architecture where multiple Xmon qubits couple to a common coplanar waveguide resonator. The coupling strength is experimentally verified to be adjustable from 0 MHz to about 40 MHz, and the qubit lifetime can still be up to 12 μs in the presence of the coupling element.

关键词: superconducting Xmon qubit, qubit-resonator coupling, tunable coupling

Abstract:

Key words: superconducting Xmon qubit, qubit-resonator coupling, tunable coupling

中图分类号: (Quantum computation architectures and implementations)

03.67.Lx

42.50.Ct (Quantum description of interaction of light and matter; related experiments) 85.25.Cp (Josephson devices)

李贺康, 李科敏, 董航, 郭秋江, 刘武新, 王战, 王浩华, 郑东宁. Tunable coupling between Xmon qubit and coplanar waveguide resonator[J]. 中国物理B, 2019, 28(8): 80305-080305.

He-Kang Li(李贺康), Ke-Min Li(李科敏), Hang Dong(董航), Qiu-Jiang Guo(郭秋江), Wu-Xin Liu(刘武新), Zhan Wang(王战), Hao-Hua Wang(王浩华), Dong-Ning Zheng(郑东宁). Tunable coupling between Xmon qubit and coplanar waveguide resonator[J]. Chin. Phys. B, 2019, 28(8): 80305-080305.

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Tunable coupling between Xmon qubit and coplanar waveguide resonator

Tunable coupling between Xmon qubit and coplanar waveguide resonator

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