Role of Bell Singlet State in the Suppression of Disentanglement

Abstract

The stability of entanglement of two atoms in a cavity is analyzed in this work. By studying the general Werner states we clarify the role of Bell-singlet state in the problem of suppression of disentanglement due to spontaneous emission. It is also shown explicitly that the final amount of entanglement depends on the initial ingredients of the Bell-singlet state.

arXiv comment5 pages, 2 figures, accepted by Phys. Rev. A

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• Prediction for new magnetoelectric fluorides
• Manipulating entanglement sudden death in two coupled two-level atoms interacting off-resonance with a radiation field: an exact treatment
• Entanglement dynamics of two-qubit system in different types of noisy channels
• Asymptotic entanglement sudden death in two atoms with dipole-dipole and Ising interactions coupled to a radiation field at non-zero detuning