Waiting for the Quantum Bus
A.J. Bracken, G.F. Melloy

TL;DR
This paper reviews the history and recent experimental proposals related to the quantum probability backflow effect, highlighting its significance and potential observation in Bose-Einstein condensates.
Contribution
It provides a non-technical overview of the history and recent experimental efforts to observe quantum probability backflow.
Findings
Probability backflow effect characterized over 20 years ago
Recent proposals aim to observe the effect in Bose-Einstein condensates
Historical overview of the quantum backflow phenomenon
Abstract
Forty-five years after the discovery of the peculiar quantum effect known as `probability backflow', and twenty years after the greatest possible size of the effect was characterized, an experiment has been proposed recently to observe the effect in a Bose-Einstein condensate. Here the history is described in non-technical terms.
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Taxonomy
TopicsCold Atom Physics and Bose-Einstein Condensates · Quantum Mechanics and Applications
