The role of auxiliary photons in the problem of identifying a state secretly chosen from a given set of L-photon states is analysed. It is shown that auxiliary photons do not increase the ability to discriminate such states by means of a global measurement using only optical linear elements, conditional transformation and auxiliary photons
Carollo, A., Palma, G.M. (2002). The role of auxiliary photons in state discrimination with linear optical devices. JOURNAL OF MODERN OPTICS, 49(9), 1147-1155 [10.1080/09500340110098370].
The role of auxiliary photons in state discrimination with linear optical devices
Carollo, Angelo;PALMA, Gioacchino Massimo
2002-01-01
Abstract
The role of auxiliary photons in the problem of identifying a state secretly chosen from a given set of L-photon states is analysed. It is shown that auxiliary photons do not increase the ability to discriminate such states by means of a global measurement using only optical linear elements, conditional transformation and auxiliary photons
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