周期势场中物质波隧穿的动力学控制
Dynamical control of matter-wave tunneling in periodic potentials
摘要：
本文报道了在强驱动光晶格中玻色-爱因斯坦凝聚体（BEC）阱间隧穿的动态抑制测量。强驱动是对应于随时间变化的线性势的晶格的正弦振动，并且通过让BEC在晶格中自由膨胀来测量隧穿。所测量的隧穿率降低，并且对于振动参数的某些值，完全抑制。我们的结果与理论预测非常吻合。此外，我们还证实了在一般情况下，强振动并不破坏BEC的相位相干性，从而为以振动强度为控制参量实现量子相变提供了可能性。
英文摘要：
We report on measurements of dynamical suppression of inter-well tunneling of a Bose-Einstein condensate (BEC) in a strongly driven optical lattice. The strong driving is a sinusoidal shaking of the lattice corresponding to a time-varying linear potential, and the tunneling is measured by letting the BEC freely expand in the lattice. The measured tunneling rate is reduced and, for certain values of the shaking parameter, completely suppressed. Our results are in excellent agreement with theoretical predictions. Furthermore, we have verified that in general the strong shaking does not destroy the phase coherence of the BEC, opening up the possibility of realizing quantum phase transitions by using the shaking strength as the control parameter.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
