用物质波量子探针探测经典混沌势
Exploring classically chaotic potentials with a matter wave quantum probe
摘要：
我们研究了一个实验装置，在该装置中，由准单模引导原子激光器提供的量子探针与特征参数可调的静态局域吸引势相互作用。在这个系统中，经典力学预测了从规则到混沌行为的过渡，作为纵向和横向自由度之间的耦合的结果。我们的实验结果显示了这种转变的明显特征。在广泛的数值模拟的基础上，我们讨论了量子与经典物理预测在这方面。该系统为研究量子散射开辟了新的可能性，为经典和量子混沌提供了新的试验场，并使人们能够重新审视量子-经典对应关系。
英文摘要：
We study an experimental setup in which a quantum probe, provided by a quasi-monomode guided atom laser, interacts with a static localized attractive potential whose characteristic parameters are tunable. In this system, classical mechanics predicts a transition from a regular to a chaotic behavior as a result of the coupling between the longitudinal and transverse degrees of freedom. Our experimental results display a clear signature of this transition. On the basis of extensive numerical simulations, we discuss the quantum versus classical physics predictions in this context. This system opens new possibilities for investigating quantum scattering, provides a new testing ground for classical and quantum chaos and enables to revisit the quantum-classical correspondence.
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