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Title: Coherence-Enhanced Imaging of a Degenerate Bose-Einstein Gas

Abstract

We present coherence-enhanced imaging, an in situ technique that uses Raman superradiance to probe the spatial coherence of an ultracold gas. Applying this technique, we identify the coherent portion of an inhomogeneous degenerate {sup 87}Rb gas and obtain a spatially resolved measurement of the first-order spatial correlation function. We find that the decay of spin gratings is enhanced in high density regions of a Bose-Einstein condensate, and ascribe the enhancement to collective atom-atom scattering. Further, we directly observe spatial inhomogeneities that arise generally in the course of extended-sample superradiance.

Authors:
; ; ; ;  [1]
  1. Department of Physics, University of California, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
20957734
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevLett.98.110401; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOM-ATOM COLLISIONS; BOSE-EINSTEIN CONDENSATION; BOSE-EINSTEIN GAS; CORRELATION FUNCTIONS; RUBIDIUM 87; SPIN; SUPERRADIANCE

Citation Formats

Sadler, L. E., Higbie, J. M., Leslie, S. R., Vengalattore, M., and Stamper-Kurn, D. M.. Coherence-Enhanced Imaging of a Degenerate Bose-Einstein Gas. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.110401.
Sadler, L. E., Higbie, J. M., Leslie, S. R., Vengalattore, M., & Stamper-Kurn, D. M.. Coherence-Enhanced Imaging of a Degenerate Bose-Einstein Gas. United States. doi:10.1103/PHYSREVLETT.98.110401.
Sadler, L. E., Higbie, J. M., Leslie, S. R., Vengalattore, M., and Stamper-Kurn, D. M.. Fri . "Coherence-Enhanced Imaging of a Degenerate Bose-Einstein Gas". United States. doi:10.1103/PHYSREVLETT.98.110401.
@article{osti_20957734,
title = {Coherence-Enhanced Imaging of a Degenerate Bose-Einstein Gas},
author = {Sadler, L. E. and Higbie, J. M. and Leslie, S. R. and Vengalattore, M. and Stamper-Kurn, D. M.},
abstractNote = {We present coherence-enhanced imaging, an in situ technique that uses Raman superradiance to probe the spatial coherence of an ultracold gas. Applying this technique, we identify the coherent portion of an inhomogeneous degenerate {sup 87}Rb gas and obtain a spatially resolved measurement of the first-order spatial correlation function. We find that the decay of spin gratings is enhanced in high density regions of a Bose-Einstein condensate, and ascribe the enhancement to collective atom-atom scattering. Further, we directly observe spatial inhomogeneities that arise generally in the course of extended-sample superradiance.},
doi = {10.1103/PHYSREVLETT.98.110401},
journal = {Physical Review Letters},
number = 11,
volume = 98,
place = {United States},
year = {Fri Mar 16 00:00:00 EDT 2007},
month = {Fri Mar 16 00:00:00 EDT 2007}
}
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