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 |
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| 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: | 01 Aug 2021 11:48 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/38845 |
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