Salecker-Wigner-Peres clock and average tunneling times

Details Salecker-Wigner-Peres clock and average tunneling times Salecker-Wigner-Peres clock and average tunneling times

2011-08-15

arxiv.org/abs/1108.3037v1

Physics Letters A 375 (2011) 415-421

Physics

Quantum Physics

9 pages, 4 figures

Scientific paper

10.1016/j.physleta.2010.11.055

The quantum clock of Salecker-Wigner-Peres is used, by performing a post-selection of the final state, to obtain average transmission and reflection times associated to the scattering of localized wave packets by static potentials in one dimension. The behavior of these average times is studied for a gaussian wave packet, centered around a tunneling wave number, incident on a rectangular barrier and, in particular, on a double delta barrier potential. The regime of opaque barriers is investigated and the results show that the average transmission time does not saturate, showing no evidence of the Hartman effect (or its generalized version).

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