Entanglement dynamics and maintenance for two atoms in coupled cavities

Li, Wen-Zhang; Zhang, Chunyu; Shen, Li-Tuo; Yang, Zhen‐Biao

doi:10.1016/j.optcom.2013.11.017

Cited by 3 publications

(1 citation statement)

References 41 publications

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“…Especially for state r ABE 3 ( ) , the entanglement experiences rebirth after sudden death and the ESD can be avoided by choosing appropriate ν. The physical mechanism behind this can be explained as [52] by introducing the delocalized atomic and field operators, which reveals that a large hopping rate ν between the cavities can preserve the atomic entanglement by restraining the atoms from entangling with the cavities. However, in the early time evolution, increasing ν will enhance the decay of atomic entanglement for states r ABE It can be understood that due to the initial atom-cavity correlation, especially quantum correlation, strengthening the hopping rate between the two cavities in turn generates some effective interaction between the atoms and the cavities, which counters the fast disentanglement.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Quantum correlation dynamics of two qubits in independent reservoirs with initial system-reservoir correlations

Ma¹,

Sun²,

Guo³

2020

Commun. Theor. Phys.

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The dynamics of entanglement and quantum discord (QD) between two two-level atoms interacting with two dissipative coupled cavities in the presence of initial atom-cavity correlations is investigated. In comparison with the result of the initial factorized state, we show that the initial state contained quantum correlation of atom-cavity is most robust against the dissipative environment, and the initial atom-cavity correlations, especially the quantum correlation, play a constructive role in the generation of atomic entanglement and QD. Simultaneously, the comparison between Markovian and non-Markovian dynamics, and the influences of inter-cavity hopping rate are also taken into account and analyzed.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

Quantum correlation dynamics of two qubits in independent reservoirs with initial system-reservoir correlations

Ma¹,

Sun²,

Guo³

2020

Commun. Theor. Phys.

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Thermal atom–atom entanglement in a bichromatic Kerr nonlinear coupler

Abbasi

2016

Annals of Physics

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Quantum coherence in a coupled-cavity array

Dewei

Zhang

Wang

et al. 2016

Int. J. Mod. Phys. B

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The dynamical properties of quantum coherence in the system of two-coupled-cavities, each of which resonantly interacts with a two-level atom, is investigated via the relative entropy measure. We focus on the coherences for the atom–atom, atom–cavity and cavity–cavity subsystems and find that the dynamical behaviors of these coherences depend largely on the cavity–cavity coupling, which may indicate the Mott insulator-superfluid transition in the thermodynamic limit. We also study the influences of the initial cavity–cavity correlation on the coherences and show that the initial correlation of the cavity–cavity subsystem can enhance the revival ability for the atom–atom and cavity–cavity coherences while reduce that for the atom–cavity coherence. Besides, we demonstrate the qualitative difference of dynamics between coherence and entanglement. Finally, the influences of dissipations including cavity losses and atomic decays on the coherence are explored.

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Entanglement dynamics and maintenance for two atoms in coupled cavities

Cited by 3 publications

References 41 publications

Quantum correlation dynamics of two qubits in independent reservoirs with initial system-reservoir correlations

Quantum correlation dynamics of two qubits in independent reservoirs with initial system-reservoir correlations

Thermal atom–atom entanglement in a bichromatic Kerr nonlinear coupler

Quantum coherence in a coupled-cavity array

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