Determination of Relaxation Time of a Josephson Tunnel Junction

作     者：温学达 于扬 

作者机构：National Laboratory of Solid State Microstructures Department of Physics Nanjing University Nanjing 210093 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2008年第25卷第2期

页      面：694-697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：Supported by the National Natural Science Foundation of China under Grant No 10674062  the Natural Science Foundation of Jiangsu Province (BK2006118)  and the Doctoral Funds of Ministry of Education of China (20060284022). We thank Sun Guozhu  Qing Lan and Mao Ting for useful discussions 

主　　题：MACROSCOPIC QUANTUM STATES LEVEL QUANTIZATION OSCILLATIONS LIFETIME QUBITS 

摘      要：We propose a non-stationary method to measure the energy relaxation time of Josephson tunnel junctions from microwave enhanced escape phenomena. Compared with the previous methods, our method possesses simple and accurate features. Moreover, having determined the energy relaxation time, we can further obtain the coupling strength between the microwave source and the junction by changing the microwave power.