%0 Journal Article
%T Minimal Absorption Measurements
%A Serge Massar
%A Graeme Mitchison
%A Stefano Pironio
%J Physics
%D 2001
%I arXiv
%R 10.1103/PhysRevA.64.062303
%X We show that it is not possible to discriminate two close transparencies without a certain number of photons being absorbed. We extend this to the discrimination of patterns of transparency (images).
%U http://arxiv.org/abs/quant-ph/0102116v1