Photon-assisted tunneling of a driven two-mode Bose-Einstein condensate

Journal Article · Sun Aug 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.023616· OSTI ID:21448555

Qiongtao, Xie; Shiguang, Rong; Honghua, Zhong; Gengbiao, Lu; Wenhua, Hai ^[1]

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1. Department of Physics and Key Laboratory of Low-Dimensional Quantum Structure and Quantum Control of Ministry of Education, Hunan Normal University, Changsha 410081 (China)

We investigate the photon-assisted tunneling of a Bose-Einstein condensate in a periodically driven double-well potential. It is shown that the energy levels become nonequidistant due to the presence of the interatomic interaction, thereby leading to the occurrences of the fractional photon resonances. Depending on whether the resonance frequency shifts with the interatomic interaction, two distinct types of resonances are identified: nonshifting resonances and shifting resonances. In particular, certain nonshifting fractional resonances show an odd-even sensitivity to the atom number.

• OSTI ID: 21448555
• Journal Information: Physical Review. A, Vol. 82, Issue 2; Other Information: DOI: 10.1103/PhysRevA.82.023616; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
ENERGY LEVELS
INTERATOMIC FORCES
PERIODICITY
PHOTONS
POTENTIALS
RESONANCE
TUNNEL EFFECT
BOSONS
ELEMENTARY PARTICLES
MASSLESS PARTICLES
VARIATIONS