Detection mechanism for quantum phase transition in superconducting qubit array

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	Detection mechanism for quantum phase transition in superconducting qubit array
	Wang, Ying-Dan; Xue, Fei; Song, Zhi; Sun, Chang-Pu; Wang, YD , NTT Corp, NTT Bas Res Labs, Kanagawa 2430198, Japan
刊名	PHYSICAL REVIEW B
	2007
卷号	76 期号:17 页码:-
关键词	Charge Qubits Electrodynamics Model
ISSN号	1098-0121
英文摘要	We describe a mechanism to detect quantum phase transition (QPT) in a system by a coherent probe weakly coupled to it. We illustrate this mechanism by a circuit QED architecture where a superconducting Josephson junction qubit array interacts with a one-dimensional superconducting transmission line resonator (TLR). The superconducting qubit array is modeled as an Ising chain in transverse field. Our investigation shows that the QPT phenomenon in the superconducting qubit array can be evidently revealed by the correlation spectrum of TLR output: At the critical point, the drastic broadening of spectrum indicates the occurrence of QPT. We also show the generalization of this mechanism to other QPT systems.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000251326600121
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5631]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Wang, YD , NTT Corp, NTT Bas Res Labs, Kanagawa 2430198, Japan
推荐引用方式 GB/T 7714	Wang, Ying-Dan,Xue, Fei,Song, Zhi,et al. Detection mechanism for quantum phase transition in superconducting qubit array[J]. PHYSICAL REVIEW B,2007,76(17):-.
APA	Wang, Ying-Dan,Xue, Fei,Song, Zhi,Sun, Chang-Pu,&Wang, YD , NTT Corp, NTT Bas Res Labs, Kanagawa 2430198, Japan.(2007).Detection mechanism for quantum phase transition in superconducting qubit array.PHYSICAL REVIEW B,76(17),-.
MLA	Wang, Ying-Dan,et al."Detection mechanism for quantum phase transition in superconducting qubit array".PHYSICAL REVIEW B 76.17(2007):-.