基于传输电流可见性的Buttiker-Landauer穿越时间估计
Estimation of Buttiker-Landauer traversal time based on the visibility of transmission current
摘要：
我们提出了一种基于传输电流可见性的Büttiker-Landauer遍历时间估计的建议。我们用含时势分析了隧穿现象，得到了含时的传输电流。我们发现，可见性是直接连接到遍历时间。此外，这一结果不仅对矩形势垒有效，而且对WKB近似适用的一般形式的势也有效。我们将这些结果与Nelson的量子力学模拟得到的数值进行了比较。这两种方法都能很好地拟合出遍历时间，表明该方法在实验上是非常有效的。
英文摘要：
We present a proposal for the estimation of Büttiker-Landauer traversal time based on the visibility of transmission current. We analyze the tunneling phenomena with a time-dependent potential and obtain the time-dependent transmission current. We found that the visibility is directly connected to the traversal time. Furthermore, this result is valid not only for rectangular potential barrier but also for general form of potential to which the WKB approximation is applicable . We compared these results with the numerical values obtained from the simulation of Nelson's quantum mechanics. Both of them fit together and it shows our method is very effective to measure experimentally the traversal time.
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