中国物理B ›› 2015, Vol. 24 ›› Issue (11): 110301-110301.doi: 10.1088/1674-1056/24/11/110301

• GENERAL • 上一篇    下一篇

Frequency-tunable transmon in a three-dimensional copper cavity

潘佳政a c, 曹志敏a c, 范云益a c, 周渝a c, 兰栋b c, 刘宇浩b c, 陈志平a c, 李永超a c, 曹春海a c, 许伟伟a c, 康琳a c, 陈健a, 于海峰b c, 于扬b c, 孙国柱a c, 吴培亨a c   

  1. a National Laboratory of Solid State Microstructures and Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China;
    b National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China;
    c Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2015-05-01 修回日期:2015-07-15 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: Sun Guo-Zhu E-mail:gzsun@nju.edu.cn
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos. 2011CB922104 and 2011CBA00200), the National Natural Science Foundation of China (Grant No. 11474154), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK2012013), the Priority Academic Program Development of Jiangsu Higher Education Institutions, China, the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20120091110030), and the Dengfeng Project B of Nanjing University, China.

Frequency-tunable transmon in a three-dimensional copper cavity

Pan Jia-Zheng (潘佳政)a c, Cao Zhi-Min (曹志敏)a c, Fan Yun-Yi (范云益)a c, Zhou Yu (周渝)a c, Lan Dong (兰栋)b c, Liu Yu-Hao (刘宇浩)b c, Chen Zhi-Ping (陈志平)a c, Li Yong-Chao (李永超)a c, Cao Chun-Hai (曹春海)a c, Xu Wei-Wei (许伟伟)a c, Kang Lin (康琳)a c, Chen Jian (陈健)a, Yu Hai-Feng (于海峰)b c, Yu Yang (于扬)b c, Sun Guo-Zhu (孙国柱)a c, Wu Pei-Heng (吴培亨)a c   

  1. a National Laboratory of Solid State Microstructures and Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China;
    b National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China;
    c Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2015-05-01 Revised:2015-07-15 Online:2015-11-05 Published:2015-11-05
  • Contact: Sun Guo-Zhu E-mail:gzsun@nju.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos. 2011CB922104 and 2011CBA00200), the National Natural Science Foundation of China (Grant No. 11474154), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK2012013), the Priority Academic Program Development of Jiangsu Higher Education Institutions, China, the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20120091110030), and the Dengfeng Project B of Nanjing University, China.

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摘要： We have realized a frequency-tunable transmon in a three-dimensional cooper cavity using a direct current superconducting quantum interference device. Both the transition frequency of the transmon and the frequency of the dressed cavity can be varied with the applied external flux bias, which are well consistent with the theoretical model. The range of the variable transition frequency is from 5.188 GHz to 7.756 GHz. The energy relaxation time of the transmon is hundreds of nanoseconds.

关键词: superconducting qubit, three-dimensional transmon, tunable transmon, dc-superconducting quantum interference device

Abstract: We have realized a frequency-tunable transmon in a three-dimensional cooper cavity using a direct current superconducting quantum interference device. Both the transition frequency of the transmon and the frequency of the dressed cavity can be varied with the applied external flux bias, which are well consistent with the theoretical model. The range of the variable transition frequency is from 5.188 GHz to 7.756 GHz. The energy relaxation time of the transmon is hundreds of nanoseconds.

Key words: superconducting qubit, three-dimensional transmon, tunable transmon, dc-superconducting quantum interference device

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

  • 03.67.Lx
42.50.Pq (Cavity quantum electrodynamics; micromasers) 85.25.Dq (Superconducting quantum interference devices (SQUIDs))