Observation of Strong Quantum Depletion in a Gaseous Bose-Einstein Condensate
classification
❄️ cond-mat.other
keywords
depletionquantumbose-einsteincondensatedepletedgaseousstrongatomic
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We studied quantum depletion in a gaseous Bose-Einstein condensate. An optical lattice enhanced the atomic interactions and modified the dispersion relation resulting in strong quantum depletion. The depleted fraction was directly observed as a diffuse background in the time-of-flight images. Bogoliubov theory provided a semi-quantitative description for our observations of depleted fractions in excess of 50%.
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