Searching for Bloch wave packets with almost definite momentum direction
arXiv:2504.12489 · doi:10.1103/k9km-k3dm
Abstract
The motion of a quantum particle in a one-dimensional periodic potential can be described in terms of Bloch wave packets. Like free-particle wave packets, they can propagate without attenuation. Here, we examine this similarity more closely by investigating whether Bloch wave packets can maintain a definite -- or nearly definite -- momentum direction, a property inherent to free-particle wave packets. This question is particularly relevant to the feasibility of using solid-state-based systems in the search for the first experimental realization of quantum backflow, a quantum interference effect in which a particle's probability density flows in a direction opposite to its momentum.
12 pages, 2 figures
References in corpus (14)
- Coherent control of single electrons: a review of current progress
- A new approach to quantum backflow
- Analytic Examples, Measurement Models and Classical Limit of Quantum Backflow
- Detecting quantum backflow by the density of a Bose-Einstein Condensate
- Demonstrating backflow in classical two beams' interference
- Azimuthal backflow in light carrying orbital angular momentum
- An Introduction to the Quantum Backflow Effect
- Quantum backflow in a ring
- Interference of spin-orbit coupled Bose-Einstein condensates
- Experiment-friendly formulation of quantum backflow
- On the experiment-friendly formulation of quantum backflow
- Mesoscopic transport and quantum chaos
- Observation of single-photon azimuthal backflow with weak measurement
- Quantum backflow for two identical particles