Cavity-induced switching between localized and extended states in a noninteracting Bose-Einstein condensate

Journal Article · Sat Oct 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.043606· OSTI ID:22095397

Lu, Zhou; Keye, Zhang; Weiping, Zhang ^[1]; Han, Pu ^[2]; Xingdong, Zhao ^[3]

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1. Quantum Institute for Light and Atoms, Department of Physics, East China Normal University, 200062 Shanghai (China)
2. Department of Physics and Astronomy, and Rice Quantum Institute, Rice University, Houston, Texas 77251-1892 (United States)
3. Department of Physics, Henan Normal University, 453007 Xinxiang (China)

We study an ultracold atom-cavity coupling system, which had been implemented in an experiment to display weak light nonlinearity [S. Gupta, K. L. Moore, K. W. Murch, and D. M. Stamper-Kurn, Phys. Rev. Lett. 99, 213601 (2007)]. The model is described by a noninteracting Bose-Einstein condensate contained in a Fabry-Perot optical resonator, in which two incommensurate standing-wave modes are excited and thus form a quasiperiodic optical lattice potential for the atoms. Special emphasis is paid to the variation of the atomic wave function induced by the cavity light field. We show that bistability between the atomic localized and extended states can be generated under appropriate conditions.

• OSTI ID: 22095397
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
NONLINEAR PROBLEMS
POTENTIALS
RESONATORS
STANDING WAVES
WAVE FUNCTIONS