Simulating quantum backflow on a quantum computer

TL;DR

This paper reports the first experimental simulation of quantum backflow, a counterintuitive quantum phenomenon, using a real quantum computer, demonstrating the potential of quantum computing for simulating complex quantum effects.

Contribution

The paper introduces the first implementation of quantum backflow simulation on a quantum computer, advancing quantum simulation capabilities.

Findings

Successful simulation of quantum backflow on a quantum computer

Demonstration of quantum computer's potential for complex quantum phenomena

Foundation for future experimental studies of quantum backflow

Abstract

Quantum backflow is a counterintuitive effect in which the probability density of a free particle moves in the direction opposite to the particle's momentum. If the particle is electrically charged, then the effect can be viewed as the contrast between the direction of electric current and that of the momentum. To date, there has been no direct experimental observation of quantum backflow. However, the effect has been simulated numerically (using classical computers) and optically (using classical light). In this study, we present the first simulation of quantum backflow using a real quantum computer.