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 language | English |
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Article number | 043626 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 99 |
Issue number | 4 |
DOIs | |
Publication status | Published - 25 Apr 2019 |