The role of auxiliary states in state discrimination with linear optical evices

Abstract

The role of auxiliary photons in the problem of identifying a state secretly chosen from a given set of L-photon states is analyzed. 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.

5 pages. 1 figure. RevTex document

References in corpus (2)

• Experimental quantum teleportation
• On a linear optical implementation of non local product states and on their indistinguishability

Cited by in corpus (5)

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• Exchange-Symmetrized Qudit Bell Bases and Bell-State Distinguishability
• Optimal entangling operations between deterministic blocks of qubits encoded into single photons