NDLI: Influences of Initial States on Entanglement Dynamics of Two Central Spins in a Spin Environment

Content Provider	Springer Nature Link
Author	Yu, Wen Jian Xu, Bao Ming Li, Lin Zou, Jian Li, Hai Shao, Bin
Copyright Year	2015
Abstract	We investigate the entanglement dynamics of two electronic spins coupled to a bath of nuclear spins for two special cases, one is that two central spins both interact with a common bath, and the other is that one of two spins interacts with a bath. We consider three types of initial states with different correlations between the system and the bath, i.e., quantum correlation, classical correlation, and no-correlation. We show that the initial correlations (no matter quantum correlations or classical correlations) can effectively avoid the occurrence of entanglement sudden death. Irrespective of whether both two spins or only one of the two spins interacts with the bath, the system can gain more entanglement in the process of the time evolution for initial quantum correlations. In addition, we find that the effects of the distribution of coupling constants on entanglement dynamics crucially depend on the initial state of the spin bath.
Starting Page	1460
Ending Page	1473
Page Count	14
File Format	PDF
ISSN	00207748
Journal	International Journal of Theoretical Physics
Volume Number	55
Issue Number	3
e-ISSN	15729575
Language	English
Publisher	Springer US
Publisher Date	2015-09-05
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Central two spins Initial correlations Concurrence Physics Quantum Physics Elementary Particles, Quantum Field Theory Theoretical, Mathematical and Computational Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mathematics

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