Single-particle tunneling in strongly driven double-well potentials
Single-particle tunneling in strongly driven double-well potentials
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DOI：
10.1103/physrevlett.100.190405
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发表时间：
2008-05-16
影响因子：
8.6
通讯作者：
Oberthaler, M. K.
中科院分区：
文献类型：
--
作者：
Kierig, E.;Schnorrberger, U.;Oberthaler, M. K.
我们报告了在强驱动双阱势中首次直接观察到单粒子隧穿的相干控制。在我们的装置中，原子以双阱的周期性排列传播，允许完全控制驱动参数，如频率，振幅，甚至时空对称性。我们的实验结果与相应的Floquet理论的预测在数量上是一致的，并与一个简单的双模模型的预测进行了比较。我们的实验直接揭示了隧穿的相干破坏对广义宇称对称的临界依赖。
We report on the first direct observation of coherent control of single-particle tunneling in a strongly driven double-well potential. In our setup atoms propagate in a periodic arrangement of double wells allowing the full control of the driving parameters such as frequency, amplitude, and even the space-time symmetry. Our experimental findings are in quantitative agreement with the predictions of the corresponding Floquet theory and are also compared to the predictions of a simple two mode model. Our experiments reveal directly the critical dependence of coherent destruction of tunneling on the generalized parity symmetry.