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Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect
Xue L.3; Yu Y.1; Cai X.3; Pan H.2; Wang Z.3
2016-01-15
Source PublicationPhysica C: Superconductivity and its Applications
ISSN09214534
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 BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied ; Physics, Condensed Matter
WOS IDWOS:000368953900002
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliation1.Wuhan University
2.Universidade de Macau
3.Jiangxi Normal University
Recommended Citation
GB/T 7714
Xue L.,Yu Y.,Cai X.,et al. Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect[J]. Physica C: Superconductivity and its Applications,2016,520:8-18.
APA Xue L.,Yu Y.,Cai X.,Pan H.,&Wang Z..(2016).Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect.Physica C: Superconductivity and its Applications,520,8-18.
MLA Xue L.,et al."Geometric phases and quantum correlations of superconducting two-qubit system with dissipative effect".Physica C: Superconductivity and its Applications 520(2016):8-18.
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