1. Non-Markovian dynamics of entanglement for multipartite systems.
- Author
-
Jiang Zhou, Chengjun Wu, Mingyi Zhu, and Hong Guo
- Subjects
MARKOV processes ,SYSTEM analysis ,ENERGY levels (Quantum mechanics) ,QUANTUM perturbations ,QUANTITATIVE research ,HAMILTONIAN systems ,ELECTRONIC excitation - 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. To give a more physically intuitive insight, the quasimode Hamiltonian method is applied. Our quantitative analysis is helpful for the practical engineering of entanglement. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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