Tunable Holstein model with cold polar molecules

Details Tunable Holstein model with cold polar molecules Tunable Holstein model with cold polar molecules

2010-10-08

arxiv.org/abs/1010.1782v2

Phys. Rev. A 84, 051401 2011

Physics

Atomic Physics

5 pages, 3 figures (accepted in as a Rapid Communication in Phys.Rev.A)

Scientific paper

10.1103/PhysRevA.84.051401

We show that an ensemble of polar molecules trapped in an optical lattice can be considered as a controllable open quantum system. The coupling between collective rotational excitations and the motion of the molecules in the lattice potential can be controlled by varying the strength and orientation of an external DC electric field as well as the intensity of the trapping laser. The system can be described by a generalized Holstein Hamiltonian with tunable parameters and can be used as a quantum simulator of excitation energy transfer and polaron phenomena. We show that the character of excitation energy transfer can be modified by tuning experimental parameters.

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