Modulation of energy spectrum and control of coherent microwave transmission at single-photon level by longitudinal field in a superconducting quantum circuit

作     者：Xueyi Guo Hui Deng Hekang Li Pengtao Song Zhan Wang Luhong Su Jie Li Yirong Jin Dongning Zheng 郭学仪;邓辉;李贺康;宋鹏涛;王战;苏鹭红;李洁;金贻荣;郑东宁

作者机构：Institute of Physics Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China 

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

年 卷 期：2018年第27卷第7期

页      面：339-344页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

基　　金：Project supported by the Ministry of Science and Technology of China(Grant Nos.2014CB921401,2017YFA0304300,2014CB921202,and2016YFA0300601) the National Natural Science Foundation of China(Grant No.11674376) the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB07010300) 

主　　题：longitudinal field modulation (LFM) superconducting quantum circuit microwave photonics 

摘      要：We study the effect of longitudinally applied field modulation on a two-level system using superconducting quantum circuits. The presence of the modulation results in additional transitions and changes the magnitude of the resonance peak in the energy spectrum of the qubit. In particular, when the amplitude ,λz and the frequency COl of the modulation field meet certain conditions, the resonance peak of the qubit disappears. Using this effect, we further demonstrate that the longitudinal field modulation of the Xmon qubit coupled to a one-dimensional transmission line could be used to dynamically control the transmission of single-photon level coherent resonance microwave.