【摘 要】
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We experimentally investigate the collective excitation of 87Rb Bose-Einstein condensates confined in a cigarshaped magnetic trap (QUIC trap).Using a method of
【机 构】
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State key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physi
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We experimentally investigate the collective excitation of 87Rb Bose-Einstein condensates confined in a cigarshaped magnetic trap (QUIC trap).Using a method of magnetic perturbation,the center-of-mass oscillation of the condensate is excited, so that the radial trapping frequency of the QUIc trap can be precisely determined.A high-order excitation,characterized by a fast shape oscillation,also occurs simultaneously,with a noticeable damping in the oscillation ampfitude compared with the oscillation of the center ofmass.The measured oscillation frequencies,associated with these two low-energy exeiration modes.agree well with theoretical predictions based on the Gross-Pitaevskii equation.
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