Equivalence between quantum backflow and classically forbidden probability flow in a diffraction-in-time problem

Arseni Goussev

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)
7 Downloads (Pure)

Abstract

Quantum backflow is an interference effect in which a matter-wave packet comprised of only plane waves with non-negative momenta exhibits negative probability flux. Here we show that this effect is mathematically equivalent to the appearance of classically-forbidden probability flux when a matter-wave packet, initially confined to a semi-infinite line, expands in free space.
Original languageEnglish
Article number043626
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume99
Issue number4
DOIs
Publication statusPublished - 25 Apr 2019

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