Creation of quantum correlations between two atoms in a dissipative environment from an initial vacuum state

Details Creation of quantum correlations between two atoms in a dissipative environment from an initial vacuum state Creation of quantum correlations between two atoms in a dissipative environment from an initial vacuum state

2011-10-15

arxiv.org/abs/1110.3418v2

Physics

Quantum Physics

Effects of counter-rotating interaction terms on quantum discord. Improved version accepted for publication in Physics Letters

Scientific paper

We have investigated the effect of counter-rotating terms on the dynamics of entanglement and quantum discord between two identical atoms interacting with a lossy single mode cavity field for a system initially in a vacuum state. The counter-rotating terms are found to lead to steady states in the long time limit which can have high quantum discord, but have no entanglement. The effect of cavity decay rate on this steady state quantum discord has been also investigated, surprisingly, the increase in cavity decay rate is found to both enhance and maximize the steady quantum discord for separable states.

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