Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-05-01

Journal: CHINESE PHYSICS B

Included Journals: Scopus、ISTIC、EI、SCIE

Volume: 23

Issue: 5

ISSN: 1674-1056

Key Words: entanglement; spin-star environment; weakly coupled system

Abstract: We study the entanglement evolution in a weakly coupled bipartite system with a large energy level difference under the influence of spin-star environments. The subsystems can be coupled to a pure state or a thermal equilibrium state spin-star environment. Our results show that, in the case of the coupling strength being less than the energy level difference of the subsystems (weakly coupled), the spin-star environment can always be used to assist the entanglement generation of the bipartite system.