Frequency-tunable transmon in a three-dimensional copper cavity

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

作者机构：National Laboratory of Solid State Microstructures and Research Institute of Superconductor ElectronicsSchool of Electronic Science and Engineering Nanjing University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China National Laboratory of Solid State Microstructures School of Physics Nanjing University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2015年第24卷第11期

页      面：81-84页

核心收录：

学科分类：07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070201[理学-理论物理] 0704[理学-天文学] 081201[工学-计算机系统结构] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：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) the Dengfeng Project B of Nanjing University,China 

主　　题：superconducting qubit three-dimensional transmon tunable transmon dc-superconducting quantum interference device 

摘      要：We have realized a frequency-tunable transmon in a three-dimensional cooper cavity using a direct current supercon- ducting 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.