Tripartite Entanglement Dynamics in the presence of Non-Markovian Environment
arXiv:1601.00273 · doi:10.1007/s11128-016-1331-y
Abstract
We study on the tripartite entanglement dynamics when each party is initially entangled with other parties, but they locally interact with their own non-Markovian environment. First, we consider three GHZ-type initial states, all of which have GHZ symmetry provided that the parameters are chosen appropriately. However, this symmetry is broken due to the effect of environment. The corresponding -tangles, one of the tripartite entanglement measure, are analytically computed at arbitrary time. The revival phenomenon of entanglement occurs after complete disappearance of entanglement. We also consider two W-type initial states. The revival phenomenon also occurs in this case. On the analytical ground the robustness issue against the effect of environment is examined for both GHZ-type and W-type initial states.
19pages, 7 pdf figures V2: 24 pages, 11 figures, will appear in QIP
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