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Entanglement properties of atoms in the Kerr-nonlinear blackbody

  • Q. F. XuEmail author
  • X. Z. Hui
  • J. N. Chen
  • Z. Cheng
Regular Article

Abstract

We study the entanglement properties of two-qubits and multi-qubits interacting with local reservoirs in Kerr-nonlinear blackbody (KNB). Death and birth of the entanglement can be controlled by adjusting the temperature T and the coupling coefficient γ in KNB. For initial entangled states with local thermal reservoirs, we also demonstrate that the system always becomes disentangled for a finite time at finite temperature T. General conditions are derived under which entanglement sudden death (ESD) can be hastened, delayed or averted. Therefore, our results provide a clear clue on how to preserve the entanglement for quantum information processing in a given KNB environments.

Keywords

Quantum Optics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Shandong Provincial Key Laboratory of Atomic and Molecular Physics, Department of PhysicsLudong UniversityYanTaiP.R. China
  2. 2.Rizhao Polytechnic UniversityRizhaoP.R. China
  3. 3.Department of PhysicsHuazhong University of Science and TechnologyWuhanP.R. China

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