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Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect
Liyuan Xue1; Yanxia Yu2; Xiaoya Cai1; Hui Pan3; Zisheng Wang1,3
2015-12-02
Source PublicationPhysica C: Superconductivity and its Applications
ISSN0921-4534
Volume520Pages:8-18
Abstract

We investigate time-dependent Pancharatnam phases and the relations between such geometric phases and quantum correlations, i.e., quantum discord and concurrence, of superconducting two-qubit coupling system in dissipative environment with the mixture effects of four different eigenstates of density matrix. We find that the time-dependent Pancharatnam phases not only keep the motion memory of such a two-qubit system, but also include the information of quantum correlations. We show that the sudden died and alive phenomena of quantum entanglement are intrinsic in the transition of Pancharatnam phase in the X-state and the complex oscillations of Pancharatnam phase in the Y-state. The faster the Pancharatnam phases change, the slower the quantum correlations decay. In particular, we find that a subspace of quantum entanglement can exist in the Y-state by choosing suitable coupling parameters between two-qubit system and its environment, or initial conditions.

KeywordDissipative Environment Pancharatnam Phase Quantum Correlation
DOI10.1016/j.physc.2015.11.004
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaPhysics
WOS SubjectPhysics, Applied ; Physics, Condensed Matter
WOS IDWOS:000368953900002
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliation1.College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, PR China
2.School of Physics and Technology, Wuhan University, Wuhan 430072, PR China
3.Institute of Applied Physics and Materials Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, PR China
Recommended Citation
GB/T 7714
Liyuan Xue,Yanxia Yu,Xiaoya Cai,et al. Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect[J]. Physica C: Superconductivity and its Applications,2015,520:8-18.
APA Liyuan Xue,Yanxia Yu,Xiaoya Cai,Hui Pan,&Zisheng Wang.(2015).Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect.Physica C: Superconductivity and its Applications,520,8-18.
MLA Liyuan Xue,et al."Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect".Physica C: Superconductivity and its Applications 520(2015):8-18.
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