Entangled steady-states of two atoms in an optical cavity by engineered decay

Details Entangled steady-states of two atoms in an optical cavity by engineered decay Entangled steady-states of two atoms in an optical cavity by engineered decay

2011-10-05

arxiv.org/abs/1110.1024v1

Physics

Quantum Physics

35 pages, 14 figures

Scientific paper

We propose various schemes for dissipative preparation of a maximally entangled steady-state of two atoms in an optical cavity. Harnessing the natural decay processes of cavity photon loss and spontaneous emission, we use an effective operator formalism to identify and engineer effective decay processes which reach an entangled steady-state of two atoms as the unique fixed point of the dissipative time evolution. We investigate various aspects that are crucial for the experimental implementation of our schemes in present-day and future cavity QED systems and analytically derive the optimal parameters, the error scaling and speed of convergence of our protocols. Our study shows promising performance of our schemes for existing cavity experiments and favorable scaling of fidelity and speed with respect to the cavity parameters.

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