Open AccessComparison of entanglement decay between Bell-like states under different environmental models
Author(s) -
Han Wang,
Cui Wen-Kai,
Ying-Jie Zhang,
YunJie Xia
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.230302
Subject(s) - quantum entanglement , physics , state (computer science) , bell state , quantum mechanics , bell's theorem , multipartite entanglement , statistical physics , squashed entanglement , computer science , quantum , algorithm
Establishing three different environment models (i.e., single reservoir model, common reservoir model and independent reservoir model), we investigate the evolutional characteristic of the entangled system initially in Bell-like state by the pseudomode method. Through comparing the entanglement decays under the three different environment models, we find that the entangled Bell-like state cos θ |ee> + sin θ |gg> will be kept in the single reservoir model for a time longer than in the other two models. However, the entanglement decay behavior of Bell-like state cos θ |eg> + sin θ |ge> is dependent on the specific environment model. Meanwhile, the comparison of entanglement decay between the above two Bell-like states at the same environment models is performed.