Controlling entanglement sudden death in cavity QED by classical driving fields

Details Controlling entanglement sudden death in cavity QED by classical driving fields Controlling entanglement sudden death in cavity QED by classical driving fields

2008-07-17

arxiv.org/abs/0807.2783v1

Eur. Phys. J. D 51, 283-288 (2009)

Physics

Quantum Physics

Scientific paper

10.1140/epjd/e2008-00264-2

We investigate the entanglement dynamics of a quantum system consisting of two-level atoms interacting with vacuum or thermal fields with classical driving fields. We find that the entanglement of the system can be improved by adjusting the classical driving field. The influence of the classical field and the purity of the initial state on the entanglement sudden death is also studied. It is shown that the time of entanglement sudden death can be controlled by the classical driving fields. Particularly, the entanglement sudden death phenomenon will disappear if the classical driving fields are strong enough.

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