Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2012-11-01

Journal: INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

Included Journals: SCIE

Volume: 51

Issue: 11

Page Number: 3637-3646

ISSN: 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.