2000/04/30 by Koh'ichiro Hara, Koh’ichiro Hara, Ichiro Ohba
Physics and Astronomy · #Algorithm #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Current (fluid) #Mechanical and Optical Resonators #Optics #Physics #Quantum Mechanics and Applications #Quantum mechanics #Quantum tunnelling #Rectangular potential barrier #Statistical physics #Telecommunications #Transmission (telecommunications) #Tree traversal #Visibility #WKB approximation #quant-ph
paper · pdf · doi:10.1103/physreva.62.032104
published as Phys. Rev. A62, 032104 (2000) · 12 pages, REVTeX, including 7 eps figures
openalex publication_date 2000/08/14 · arxiv created 2002/10/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 was 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 that our method is very effective in measuring experimentally the traversal time.