量子δ加速器的相空间探索
Exploring the phase space of the quantum delta kicked accelerator
摘要：
我们在实验上探索了量子δ加速器的伪经典相空间结构。这是通过将玻色-爱因斯坦凝聚体暴露于由非共振驻波脉冲产生的空间波纹势来实现的。量子加速器模式首次在这样的系统中实现。通过利用凝聚态的窄动量分布，我们能够观察到量子加速器模式的离散动量态结构，并直接测量相空间中结构的大小。
英文摘要：
We experimentally explore the underlying pseudo-classical phase space structure of the quantum delta kicked accelerator. This was achieved by exposing a Bose-Einstein condensate to the spatially corrugated potential created by pulses of an off-resonant standing light wave. For the first time quantum accelerator modes were realized in such a system. By utilizing the narrow momentum distribution of the condensate we were able to observe the discrete momentum state structure of a quantum accelerator mode and also to directly measure the size of the structures in the phase space.
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