
arXiv: 1208.5681
We evaluate the spin squeezing dynamics of N independent spin-1/2 particles with exchange symmetry. Each spin interacts with its own reservoir, and the reservoirs are independently and identical. The spin squeezing parameter is analytically calculated with different kinds of decoherence. The spin squeezing property vanishes with evolution time under the Markovian decoherence. Whereas coupled to the non-Markovian decoherence channels, the spin squeezing property collapses and revives with time. As spin squeezing can be regarded as a witness of multipartite entanglement, thus our scheme shows the collapse and revival of multipartite entanglement under non-Markovian decoherence.
13 pages, 7 figures
non-Markovian decoherence, Quantum Physics, Open systems, reduced dynamics, master equations, decoherence, Stochastic methods (Fokker-Planck, Langevin, etc.) applied to problems in time-dependent statistical mechanics, Quantum coherence, entanglement, quantum correlations, FOS: Physical sciences, Coherent states, spin squeezing, Quantum Physics (quant-ph)
non-Markovian decoherence, Quantum Physics, Open systems, reduced dynamics, master equations, decoherence, Stochastic methods (Fokker-Planck, Langevin, etc.) applied to problems in time-dependent statistical mechanics, Quantum coherence, entanglement, quantum correlations, FOS: Physical sciences, Coherent states, spin squeezing, Quantum Physics (quant-ph)
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