Simulation of the spin-boson model with superconducting phase qubit coupled to a transmission line

作     者：YU LongBao TONG NingHua XUE ZhengYuan WANG ZiDan ZHU ShiLiang 

作者机构：Laboratory of Quantum Information Technology and School of Physics and Telecommunication Engineering South China Normal University Guangzhou 510006 China School of Electronic and Information Electronic Engineering Hefei Normal University Hefei 230601 China Department of Physics Renmin University of China Beijing 100872-China Department of Physics and Center of Theoretical and Computational Physics the University of Hong Kong Pokfulam Road Hong Kong China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2012年第55卷第9期

页      面：1557-1561页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 081201[工学-计算机系统结构] 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 Natural Science Foundation of China (Grant Nos. 11004065,11104057 and 11125417) the Natural Science Foundation of Guangdong Province (Grant No.10451063101006312) the State Key Program for Basic Research of China(Grant No. 2011CB922104) the GRF and CRF of the RGC of Hong Kong 

主　　题：spin-boson model superconducting qubit quantum phase transition numerical renormalization group method 

摘      要：Based on the rapid experimental developments of circuit QED,we propose a feasible scheme to simulate the spin-boson model with superconducting circuits,which can be used to detect quantum Kosterlitz-Thouless(KT) phase *** design the spinboson model by using a superconducting phase qubit coupled to a semi-infinite transmission line,which is regarded as a bosonic reservoir with a continuum *** tuning the bias current or the coupling capacitance,the quantum KT transition can be directly detected through tomography measurement on the states of the phase *** also estimate the experimental parameters using the numerical renormalization group method.