Entanglement and disentanglement in the nonlinear interaction between squeezing vacuum state field and atom | Zendy

Huang Yan-Xia | Zendy; Zhao Peng-Yi | Zendy; Xi Huang | Zendy; Mingsheng Zhan | Zendy

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Entanglement and disentanglement in the nonlinear interaction between squeezing vacuum state field and atom

Author(s) -

Huang Yan-Xia,

Zhao Peng-Yi,

Xi Huang,

Mingsheng Zhan

Publication year - 2004

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.53.75

Subject(s) - quantum entanglement , physics , von neumann entropy , vacuum state , nonlinear system , quantum mechanics , atom (system on chip) , field (mathematics) , w state , nonlinear medium , quantum optics , quantum electrodynamics , nonlinear optics , quantum , mathematics , computer science , pure mathematics , embedded system

The properties of the entanglement in the intensity-dependent coupling interaction between squeezing vacuum state field and atom with an additional Kerr medium are investigated by using the von Neumann entropy. The influences of nonlinear interaction intensity of Kerr medium and the squeezing degree of initial squeezing vacuum state field on the entanglement of the quantum system are discussed. The results show that the nonlinear interaction of Kerr medium can result in the generation of the maximally entangled state, disentangled-free state or disentangled state, and the degree of entanglement is stationary.

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