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发布时间：2019-03-13

论文类型：期刊论文

发表时间：2016-09-01

发表刊物：PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS

收录刊物：Scopus、EI、SCIE

卷号：457

页面范围：437-442

ISSN号：0378-4371

关键字：Quantum correlation; Quantum consonance; Quantum entanglement

摘要：In the present report, we investigate the dynamics of quantum correlation of four qubits system, and we characterize this kind of dynamics by quantum consonance and concurrence as measurement of quantum correlation and entanglement, respectively. By this measurement, one can easily study if non-entangled quantum correlation can transfer to entanglement. In our model, we find that this case cannot be realized. In addition, we constructed a four qubits swapping gate, which is made up of two bipartite swapping gates. Under this composite gate the quantum correlation is exchanged between two entangled pairs. The influence of the physical parameters like the purity and the amount of entanglement of the initial states is also examined. (C) 2016 Elsevier B.V. All rights reserved.