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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
2007
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号76期号:17页码:-
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.
部门归属NTT Corp, NTT Bas Res Labs, Kanagawa 2430198, Japan; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
关键词Charge Qubits Electrodynamics Model
学科领域Physics
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收录类别SCI
WOS记录号WOS:000251326600121
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被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5631
专题理论物理所1978-2010年知识产出
通讯作者Wang, YD , NTT Corp, NTT Bas Res Labs, Kanagawa 2430198, Japan
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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):-.
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