Resonance-enhanced group delay times in an asymmetric single quantum barrier

Details Resonance-enhanced group delay times in an asymmetric single quantum barrier Resonance-enhanced group delay times in an asymmetric single quantum barrier

2004-04-13

arxiv.org/abs/quant-ph/0404080v2

Physics

Quantum Physics

9 pages, 3 figures. more references added

Scientific paper

It is shown that the transmission and reflection group delay times in an asymmetric single quantum barrier are greatly enhanced by the transmission resonance when the energy of incident particles is larger than the height of the barrier. The resonant transmission group delay is of the order of the quasibound state lifetime in the barrier region. The reflection group delay can be either positive or negative, depending on the relative height of the potential energies on the two sides of the barrier. Its magnitude is much larger than the quasibound state lifetime. These predictions have been observed in a microwave experiment by H. Spieker of Braunschweig University.

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