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Indexed by:期刊论文

Date of Publication:2012-11-01

Journal:INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

Included Journals:SCIE

Volume:51

Issue:11

Page Number:3637-3646

ISSN No.:0020-7748

Key Words:Quantum discord; Symmetry-broken environment; Entanglement

Abstract:In contrast with the entanglement, we study the quantum discord dynamics of the two-qubit system in a symmetry-broken environment consisting of a fermionic bath. The quantum discord decay induced by the bath is analysed. By considering the two qubits that are initially prepared in the different X-states, we find that the behaviors of quantum discord and entanglement are different, the robustness of quantum discord depends on the initial state prepared in.