Estimation of Buttiker-Landauer traversal time based on the visibility of transmission current

Details Estimation of Buttiker-Landauer traversal time based on the visibility of transmission current Estimation of Buttiker-Landauer traversal time based on the visibility of transmission current

2000-04-25

arxiv.org/abs/quant-ph/0004094v4

Phys. Rev. A62, 032104 (2000)

Physics

Quantum Physics

12 pages, REVTeX, including 7 eps figures

Scientific paper

10.1103/PhysRevA.62.032104

We present a proposal for the estimation of B\"uttiker-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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