The Quantum Tomographic Roulette Wheel

G. M. D'Ariano; Italy); M. G. A. Paris (Dipartimento di Fisica 'Alessandro Volta'; Pavia

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The Quantum Tomographic Roulette Wheel

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arxiv quant-ph/9705025 v1 pith:SIIGGBH3 submitted 1997-05-13 quant-ph

G. M. D'Ariano , M. G. A. Paris (Dipartimento di Fisica 'Alessandro Volta' , Pavia , Italy) This is my paper

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Random-phase homodyne tomography of the field intensity is a concrete example of the Quantum Roulette of Helstrom. In this paper we give the explicit POM of such measurement and compare it with direct photodetection and heterodyne detection. Effects of nonunit quantum efficiency are also considered. Naimark extensions for the roulette POM are analyzed and its experimental realization is discussed.

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