Decoherence-free creation of atom-atom entanglement in cavity via fractional adiabatic passage

Details Decoherence-free creation of atom-atom entanglement in cavity via fractional adiabatic passage Decoherence-free creation of atom-atom entanglement in cavity via fractional adiabatic passage

2005-01-26

arxiv.org/abs/quant-ph/0501154v1

Phys. Rev. A., 72, 012339(2005)

Physics

Quantum Physics

4 pages, 5 figures, Submitted to Phys. Rev

Scientific paper

10.1103/PhysRevA.72.012339

We propose a robust and decoherence insensitive scheme to generate controllable entangled states of two three-level atoms interacting with an optical cavity and a laser beam. Losses due to atomic spontaneous transitions and to cavity decay are efficiently suppressed by employing fractional adiabatic passage and appropriately designed atom-field couplings. In this scheme the two atoms traverse the cavity-mode and the laser beam in opposite directions as opposed to other entanglement schemes in which the atoms are required to have fixed locations inside a cavity. We also show that the coherence of a traveling atom can be transferred to the other one without populating the cavity-mode.

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