Comment on "Asking Photons Where Have They Been"

Abstract

We argue that, in the recent letter by A. Danan et al. [PRL 111, 240402 (2013), arXiv:1304.7469], if weak measurements are performed such that complete destructive interference is not disturbed, claims such as "some photons have been inside the inner interferometer but they never entered and never left" should not arise. Standard quantum mechanics not only explains the physics better than the two-state vector formulation the authors advocate, but it can tell a very different story.

One figure added supporting our claim that rotating mirrors A and B at exactly the same frequency, but out of phase, restores complete destructive interference. Minor changes made in order to make our main argument clearer

References in corpus (4)

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