# Interaction-free discrimination between semi-transparent objects

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Absorption-free (also known as interaction-free-) measurement aims to detect the presence of an opaque object using a test particle without that particle being absorbed by the object. Here we consider semi-transparent objects which have an amplitude $\alpha$ of transmitting a particle while leaving the state of the object unchanged and an amplitu

Author: Graeme Mitchison; Serge Massar

Source: https://archive.org/