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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2012-11-01

发表刊物：INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

收录刊物：SCIE

卷号：51

期号：11

页面范围：3637-3646

ISSN号：0020-7748

关键字：Quantum discord; Symmetry-broken environment; Entanglement

摘要：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.