paper

Quantum arrival time measurement and backflow effect

arXiv:quant-ph/9803087 · doi:10.1016/S0375-9601(99)00020-1

Abstract

The current density for a freely evolving state without negative momentum components can temporarily be negative. The operational arrival time distribution, defined by the absorption rate of an ideal detector, is calculated for a model detector and compared with recently proposed distributions. Counterintuitive features of the backflow regime are discussed.

LATEX, 9 pages, 2 postscript figures

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