摘要We consider the entanglement dynamics of three two-level atoms interacting with independent structured non-Markovian reservoirs. The atoms are initially prepared in a mixed multipartite Greenberger-Horne-Zeilinger (GHZ)-type state. Based on the purity and non-Markovian reservoirs, we show that the reservoirs' entanglement can exhibit not only multipartite entanglement sudden birth but also entanglement sudden death, and the revival of atom entanglement is not always accompanied by the disentanglement of reservoirs. Meanwhile, we derive the quantitative criteria for multipartite revival and death phenomena and find multipartite entanglement sudden death and entanglement sudden birth simultaneous apparition time is independent of the initial three-qubit state.
Abstract：We consider the entanglement dynamics of three two-level atoms interacting with independent structured non-Markovian reservoirs. The atoms are initially prepared in a mixed multipartite Greenberger-Horne-Zeilinger (GHZ)-type state. Based on the purity and non-Markovian reservoirs, we show that the reservoirs' entanglement can exhibit not only multipartite entanglement sudden birth but also entanglement sudden death, and the revival of atom entanglement is not always accompanied by the disentanglement of reservoirs. Meanwhile, we derive the quantitative criteria for multipartite revival and death phenomena and find multipartite entanglement sudden death and entanglement sudden birth simultaneous apparition time is independent of the initial three-qubit state.
SHAN Chuan-Jia;LIU Ji-Bing;CHEN Tao;LIU Tang-Kun;HUANG Yan-Xia;LI Hong. Entanglement Dynamics of Three Qubits in the Non-Markovian Environments[J]. 中国物理快报, 2010, 27(10): 100301-100301.
SHAN Chuan-Jia, LIU Ji-Bing, CHEN Tao, LIU Tang-Kun, HUANG Yan-Xia, LI Hong. Entanglement Dynamics of Three Qubits in the Non-Markovian Environments. Chin. Phys. Lett., 2010, 27(10): 100301-100301.
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