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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QTuE3

Bragg scattering in optical lattices

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Abstract

Laser-cooled atoms can be trapped at periodic spatial positions by light-shift potential wells created by the polarization gradients and by interference of multiple laser beams.1 These optical lattices constitute a novel form of matter in which atoms are trapped at sites separated on the scale of the optical wavelength. At currently achieved densities, atoms occupy very few of the available sites. However, the strict periodicity in the trapping position should result in long-range order in the atomic density correlation function.

© 1995 Optical Society of America

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