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

Goussev, Arseni (2019) Equivalence between quantum backflow and classically forbidden probability flow in a diffraction-in-time problem. Physical Review A, 99 (4). 043626. ISSN 1050-2947

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Official URL: https://doi.org/10.1103/physreva.99.043626

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.

Item Type: Article
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 09 Apr 2019 08:00
Last Modified: 11 Oct 2019 08:38
URI: http://nrl.northumbria.ac.uk/id/eprint/38845

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