Two interacting atoms in a cavity: exact solutions, entanglement and decoherence

Details Two interacting atoms in a cavity: exact solutions, entanglement and decoherence Two interacting atoms in a cavity: exact solutions, entanglement and decoherence

2009-11-20

arxiv.org/abs/0911.3954v2

J M Torres et al 2010 J. Phys. A: Math. Theor. 43 192002

Physics

Quantum Physics

10 pages, 3 figures

Scientific paper

10.1088/1751-8113/43/19/192002

We address the problem of two interacting atoms of different species inside a cavity and find the explicit solutions of the corresponding eigenvalues and eigenfunctions using a new invariant. This model encompasses various commonly used models. By way of example we obtain closed expressions for concurrence and purity as a function of time for the case where the cavity is prepared in a number state. We discuss the behaviour of these quantities and and their relative behaviour in the concurrence-purity plane.

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