Entanglement and nonlocality versus spontaneous emission in two-atom system

Details Entanglement and nonlocality versus spontaneous emission in two-atom system Entanglement and nonlocality versus spontaneous emission in two-atom system

2003-08-25

arxiv.org/abs/quant-ph/0308126v1

Phys. Lett. A 318(2003),318-326

Physics

Quantum Physics

15 pages, 7 figures

Scientific paper

We study evolution of entanglement of two two-level atoms in the presence of dissipation caused by spontaneous emission. We find explicit fromulas for the amount of entanglement as a function of time, in the case of destruction of the initial entanglement and possible creation of a transient entanglement between atoms. We also discuss how spontaneous emission influences nonlocality of states expressed by violation of Bell - CHSH inequality. It is shown that evolving system very quickly becomes local, even if entanglement is still present or produced.

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