论文标题
观察和控制量化的散射光环
Observation and control of quantized scattering halos
论文作者
论文摘要
我们研究了从光学晶格中释放出的bose-Einstein冷凝物的动量成分之间的碰撞中的S波散射光环的产生。晶格周期性以负责量化光环半径的动量梳子翻译。我们通过晶格中原子动力学的精确控制报告了这些光晕的工程：我们能够特异性地增强具有给定的质量中心和相对动量的碰撞过程。特别是，我们观察到量化幅度的相对成分成分之间的量化碰撞光环，最多是晶格的特征动量尺度的6倍。
We investigate the production of s-wave scattering halos from collisions between the momentum components of a Bose-Einstein condensate released from an optical lattice. The lattice periodicity translates in a momentum comb responsible for the quantization of the halos' radii. We report on the engineering of those halos through the precise control of the atom dynamics in the lattice: we are able to specifically enhance collision processes with given center-of-mass and relative momenta. In particular, we observe quantized collision halos between opposite momenta components of increasing magnitude, up to 6 times the characteristic momentum scale of the lattice.
