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Open Quantum Systems Decoherence Quantum Simulation

Decay of a quasi-stable quantum system and quantum backflow

arXiv
Authors: Wytse van Dijk, F. Masafumi Toyama

Year

2019

Paper ID

7269

Status

Preprint

Abstract Read

~2 min

Abstract Words

60

Citations

N/A

Abstract

The decay of quasi-stable quantum system involves primarily an outgoing probability current density. However, during the transition from exponential to inverse-power-law decay there are time intervals during which this current, although small, is inward. In this paper this inward flow is associated with quantum backflow. Furthermore substantial backflow exists for time-evolving free wave packets which are initially confined in space.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • The decay of quasi-stable quantum system involves primarily an outgoing probability current density.

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