Generation of maximally entangled atom pairs in driven dissipative cavity QED systems |
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Authors: | F Casagrande A Lulli |
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Institution: | (1) Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy |
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Abstract: | We investigate the entanglement of an open tripartite
system where a cavity field mode in thermal equilibrium is
off-resonantly coupled with two atoms that are simultaneously driven
by a resonant coherent field. For moderately detuned atom-field
coupling and strong atomic driving we show the generation, at given
interaction times and for low enough cavity decay rates, of atomic
Bell states and of Bell state superpositions relevant for quantum
gates implementation. The system can oscillate between bi-separable
and fully separable states. Also we describe the distribution of
quantum correlations between the atom-atom and the two atom-field
subsystems. In the dispersive coupling regime with strongly driven
atoms we show the generation of nearly stationary Bell states which
remain protected from cavity dissipation. |
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Keywords: | 42 50 Pq Cavity quantum electrodynamics micromasers 03 67 Mn Entanglement production characterization and manipulation |
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