Related papers: Quantum backflow in a ring

Quantum backflow in a ring

URL: http://arxiv.org/abs/2008.08022v2
Date: Wed, 24 Feb 2021 10:16:19 GMT
Title: Quantum backflow in a ring
Authors: Arseni Goussev
Abstract summary: 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. Here we show that quantum backflow becomes significantly more pronounced if, instead of letting the particle move along a straight line, one forces it to move in a circular ring.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
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.

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