Journal of Physics A Mathematical and Theoretical
Comment on ‘Two-state vector formalism and quantum interference’
Lev Vaidman A
Abstract
Abstract Hashmi et al (2016 J. Phys. A: Math. Theor . 49 345302) claimed that the approach to the past of a quantum particle introduced by Vaidman (2013 Phys. Rev . A 87 052104) has difficulties in certain examples and that it can even be refuted. Here I reply to their criticism showing that the approach provides a good explanation for all the examples they considered. It is fully consistent with standard quantum mechanics and provides a useful tool for analyzing interference experiments.