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Extraction of sodium atoms from a trapped Bose-Einstein condensate (BEC) by a coherent, stimulated Raman process is demonstrated. Optical Raman pulses drive transitions between trapped and untrapped magnetic sublevels, giving the output-coupled BEC fraction a well-defined momentum. The pulsed output coupling can be run at such a rate that the extracted atomic wave packets strongly overlap, forming a highly directional, quasi-continuous matter wave.
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E. W. Hagley
National Institute of Standards and Technology
L. Deng
Yangtze Normal University
Mikio Kozuma
Tokyo Institute of Technology
Science
The University of Tokyo
National Institute of Standards and Technology
Georgia Southern University
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Hagley et al. (Fri,) studied this question.
synapsesocial.com/papers/6a10a69f10ed65f1d0fd2523 — DOI: https://doi.org/10.1126/science.283.5408.1706
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