Non-Markovian Dynamics of Entanglement for Multipartite Systems

Abstract

Entanglement dynamics for a couple of two-level atoms interacting with independent structured reservoirs is studied using a non-perturbative approach. It is shown that the revival of atom entanglement is not necessarily accompanied by the sudden death of reservoir entanglement, and vice versa. In fact, atom entanglement can revive before, simultaneously or even after the disentanglement of reservoirs. Using a novel method based on the population analysis for the excited atomic state, we present the quantitative criteria for the revival and death phenomena. For giving a more physically intuitive insight, the quasimode Hamiltonian method is applied. Our quantitative analysis is helpful for the practical engineering of entanglement.

10 pages and 4 figures

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Cited by in corpus (5)

• Quantum entanglement and disentanglement of multi-atom systems
• The decoherence dynamics of the multipartite entanglement in non-Markovian environment
• The effect of dipole-dipole interaction on tripartite entanglement in different cavities
• Multiphoton resonances for all-optical quantum logic with multiple cavities
• Generation of entanglement density within a reservoir