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.
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.
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
