光助碰撞对玻色凝聚体超辐射光散射的影响
Impact of photo-assisted collisions on superradiant light scattering with Bose condensates
摘要：
我们提出的实验证据支持的假设，光辅助碰撞的二次效应的主要原因，在凝聚体的超辐射光散射效率是不对称的，相对于抽运激光失谐的符号。然而，与最近的实验研究相反，我们观察到所有三种泵浦激光偏振的严重和可比的加热。我们还进行了双色，双脉冲测量，直接研究凝聚体相干性的退化和由此产生的超辐射散射效率的影响。
英文摘要：
We present experimental evidence supporting the postulation that the secondary effects of light-assisted collisions are the main reason that the superradiant light scattering efficiency in condensates is asymmetric with respect to the sign of the pump-laser detuning. Contrary to the recent experimental study, however, we observe severe and comparable heating with all three pump-laser polarizations. We also perform two-color, double-pulse measurements to directly study the degradation of condensate coherence and the resulting impact on the superradiant scattering efficiency.
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