摘要
We investigate the roles of different qubit-environment decoherence models on the entanglement trapping of two qubits. By considering three environmental models （the single photonic band gap model, the common photonic band gap model, and the two independent photonic band gaps model）, we note that the final values of entanglement trapping are determined by these different models. We also give the conditions of obtaining the larger entanglement trapping by comparing two-qubit entanglement dynamics in different decoherence models. Moreover, the comparison of entanglement trapping between two Bell-like states in the same decoherence model are also carried out.
We investigate the roles of different qubit-environment decoherence models on the entanglement trapping of two qubits. By considering three environmental models （the single photonic band gap model, the common photonic band gap model, and the two independent photonic band gaps model）, we note that the final values of entanglement trapping are determined by these different models. We also give the conditions of obtaining the larger entanglement trapping by comparing two-qubit entanglement dynamics in different decoherence models. Moreover, the comparison of entanglement trapping between two Bell-like states in the same decoherence model are also carried out.
基金
supported by the National Natural Science Foundation of China (Grant Nos. 61178012 and 11247240)
the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20123705120002)
the Open Project of State Key Laboratory of Crystal Material in Shandong University, China (Grant No. KF1103)
the Natural Science Foundation of Shandong Province, China (Grant No. ZR2012FQ024)
the Youth Funds from Qufu Normal University, China (Grant No. XJ201219)
the Scientific Research Foundation for Doctors of Qufu Normal University, China (Grant No. BSQD20110132)
