TY - JOUR
T1 - Equivalence between quantum backflow and classically forbidden probability flow in a diffraction-in-time problem
AU - Goussev, Arseni
PY - 2019/4/25
Y1 - 2019/4/25
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85064876078
U2 - 10.1103/physreva.99.043626
DO - 10.1103/physreva.99.043626
M3 - Article
SN - 1050-2947
VL - 99
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 043626
ER -