# Quantum backflow effect and nonclassicality

@article{Albarelli2016QuantumBE, title={Quantum backflow effect and nonclassicality}, author={F. Albarelli and Tommaso Guaita and M. Paris}, journal={International Journal of Quantum Information}, year={2016}, volume={14}, pages={1650032} }

The quantum backflow effect is a counterintuitive behavior of the probability current of a free particle, which may be negative even for states with vanishing negative momentum component. Here, we address the notion of nonclassicality arising from the backflow effect, i.e. from the negativity of the probability current, and analyze its relationships with the notion of nonclassicality based on the negativity of the Wigner function. Our results show that backflow is linked to a different, and in… CONTINUE READING

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