Quantum backflow in a ring
arXiv:2008.08022 · doi:10.1103/PhysRevA.103.022217
Abstract
Free motion of a quantum particle with the wave function entirely comprised of plane waves with non-negative momenta may be accompanied by negative probability current, an effect called quantum backflow. The effect is weak and fragile, and has not yet been observed experimentally. Here we show that quantum backflow becomes significantly more pronounced and more amenable to experimental observation if, instead of letting the particle move along a straight line, one forces it to move in a circular ring.
6 pages, 4 figures
References in corpus (4)
Cited by in corpus (15)
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- Azimuthal backflow in light carrying orbital angular momentum
- Angular momentum quantum backflow in the noncommutative plane
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- Observation of single-photon azimuthal backflow with weak measurement
- Quantum Back Flow Across a Black Hole Horizon in a Toy Model Approach
- Different routes to the classical limit of backflow
- Quantum backflow current in a ring: Optimal bounds and fractality
- Quantum backflow for two identical particles
- Searching for Bloch wave packets with almost definite momentum direction
- Simulating quantum backflow on a quantum computer
- Magnetic tuning of quantum backflow: Schrödinger vs Pauli system
- Preparing Quantum Backflow States by Large Momentum Transfer