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Title: Tuning the Mott Transition in a Bose-Einstein Condensate by Multiple Photon Absorption

Abstract

We study the time-dependent dynamics of a Bose-Einstein condensate trapped in an optical lattice. Modeling the system as a Bose-Hubbard model, we show how applying a periodic driving field can induce coherent destruction of tunneling. In the low-frequency regime, we obtain the novel result that the destruction of tunneling displays extremely sharp peaks when the driving frequency is resonant with the depth of the trapping potential ('multi-photon resonances'), which allows the quantum phase transition between the Mott insulator and the superfluid state to be controlled with high precision. We further show how the waveform of the field can be chosen to maximize this effect.

Authors:
;  [1]
  1. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)
Publication Date:
OSTI Identifier:
20775257
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 96; Journal Issue: 21; Other Information: DOI: 10.1103/PhysRevLett.96.210403; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; BOSE-EINSTEIN CONDENSATION; HUBBARD MODEL; METALS; MULTI-PHOTON PROCESSES; PERIODICITY; PHASE TRANSFORMATIONS; PHOTONS; POTENTIALS; RESONANCE; SIMULATION; SUPERFLUIDITY; TIME DEPENDENCE; TRAPPING; TUNING; TUNNEL EFFECT; WAVE FORMS

Citation Formats

Creffield, C.E., and Monteiro, T.S. Tuning the Mott Transition in a Bose-Einstein Condensate by Multiple Photon Absorption. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.210403.
Creffield, C.E., & Monteiro, T.S. Tuning the Mott Transition in a Bose-Einstein Condensate by Multiple Photon Absorption. United States. doi:10.1103/PhysRevLett.96.210403.
Creffield, C.E., and Monteiro, T.S. Fri . "Tuning the Mott Transition in a Bose-Einstein Condensate by Multiple Photon Absorption". United States. doi:10.1103/PhysRevLett.96.210403.
@article{osti_20775257,
title = {Tuning the Mott Transition in a Bose-Einstein Condensate by Multiple Photon Absorption},
author = {Creffield, C.E. and Monteiro, T.S.},
abstractNote = {We study the time-dependent dynamics of a Bose-Einstein condensate trapped in an optical lattice. Modeling the system as a Bose-Hubbard model, we show how applying a periodic driving field can induce coherent destruction of tunneling. In the low-frequency regime, we obtain the novel result that the destruction of tunneling displays extremely sharp peaks when the driving frequency is resonant with the depth of the trapping potential ('multi-photon resonances'), which allows the quantum phase transition between the Mott insulator and the superfluid state to be controlled with high precision. We further show how the waveform of the field can be chosen to maximize this effect.},
doi = {10.1103/PhysRevLett.96.210403},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 21,
volume = 96,
place = {United States},
year = {2006},
month = {6}
}