Entanglement dynamics of a strongly driven trapped atom

Details Entanglement dynamics of a strongly driven trapped atom Entanglement dynamics of a strongly driven trapped atom

2011-01-05

arxiv.org/abs/1101.1117v1

Phys. Rev. Lett. 106, 040502 (2011)

Physics

Quantum Physics

4 pages, 4 figures, to appear in the Physical Review Letters

Scientific paper

10.1103/PhysRevLett.106.040502

We study the entanglement between the internal electronic and the external vibrational degrees of freedom of a trapped atom which is driven by two lasers into electromagnetically-induced transparency. It is shown that basic features of the intricate entanglement dynamics can be traced to Landau-Zener splittings (avoided crossings) in the spectrum of the atom-laser field Hamiltonian. We further construct an effective Hamiltonian that describes the behavior of entanglement under dissipation induced by spontaneous emission processes. The proposed approach is applicable to a broad range of scenarios for the control of entanglement between electronic and translational degrees of freedom of trapped atoms through suitable laser fields.

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