Weak value as an indicator of back-action

Riuji Mochizuki

Published Jan 1, 2014• 0 citations

Abstract

In this study we critically examine some important papers on weak measurement and weak values. We find some insufficiency and mistakes in these papers, and we demonstrate that the real parts of weak values pro-vide the back-action to the post-selection, which is caused by weak mea-surement. Two examples, a counterfactual statement of Hardy’s paradox and experiments that determine the average trajectory of photons passing through double slits, are investigated from our view point. PACS numbers: 03.65.Ta, 03.65.Ud, 03.65.Ca 1

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