Tunable Holstein model with cold polar molecules

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.051401· OSTI ID:22093436

Herrera, Felipe; Krems, Roman V. ^[1]

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1. Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 (Canada)

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.

• OSTI ID: 22093436
• Journal Information: Physical Review. A, Vol. 84, Issue 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COUPLING
ELECTRIC FIELDS
ENERGY TRANSFER
EXCITATION
HAMILTONIANS
LASER RADIATION
MOLECULES
ORIENTATION
POLARONS
POTENTIALS
QUANTUM MECHANICS
SIMULATORS
TRAPPING
TUNING