Bragg diffraction of interacting Bose-Einstein condensates

Journal Article · Fri Oct 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.043628· OSTI ID:21452599

Peng, Zhang; Jianhua, Wu; Wuming, Liu ^[1]; Xiaofei, Zhang ^[1]

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1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

We develop a theoretical model to investigate the Bragg diffraction of an elongated interacting Bose-Einstein condensate which is illuminated by a pair of laser beams. We find that the mean-field effect resulting from the atomic interaction plays an important role in modifying the atomic coherence. Our results show that both the repulsive and attractive interactions would dampen the momentum oscillation of the condensate; they establish surprisingly distinguishable equilibria for the atomic occupations among different diffraction orders. We also give an experimental proposal to observe this phenomenon.

• OSTI ID: 21452599
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
BOSE-EINSTEIN CONDENSATION
BRAGG REFLECTION
COHERENT SCATTERING
COLLISIONS
DIFFRACTION
ELECTROMAGNETIC RADIATION
EQUILIBRIUM
INTERATOMIC FORCES
LASER RADIATION
MEAN-FIELD THEORY
OSCILLATIONS
PHOTON COLLISIONS
PHOTON-ATOM COLLISIONS
RADIATIONS
REFLECTION
SCATTERING