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Proceedings Paper

Experimental realization of a measurement conditional unitary operation at single photon level and application to detector characterization
Author(s): Marco Genovese; Giorgio Brida; Maria Chekhova; Marco Gramegna; Leonid Krivitsky; Sergej Kulik; Maria Luisa Rastello
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Paper Abstract

Our last experimental results on the realization of a measurement-conditional unitary operation at single photon level are presented. This gate operates by rotating by 90° the polarization of a photon produced by means of Type-II Parametric Down Conversion conditional to a polarization measurement on the correlated photon. We then propose a new scheme for measuring the quantum efficiency of a single photon detection apparatus by using this set-up. We present experimental results obtained with this scheme compared with traditional biphoton calibration. Our results show the interesting potentiality of the suggested scheme.

Paper Details

Date Published: 19 October 2004
PDF: 15 pages
Proc. SPIE 5551, Quantum Communications and Quantum Imaging II, (19 October 2004); doi: 10.1117/12.561416
Show Author Affiliations
Marco Genovese, Istituto Elettrotecnico Nazionale Galileo Ferraris (Italy)
Giorgio Brida, Istituto Elettrotecnico Nazionale Galileo Ferraris (Italy)
Maria Chekhova, M.V. Lomonosov Moscow State Univ. (Russia)
Marco Gramegna, Istituto Elettrotecnico Nazionale Galileo Ferraris (Italy)
Leonid Krivitsky, M.V. Lomonosov Moscow State Univ. (Russia)
Sergej Kulik, M.V. Lomonosov Moscow State Univ. (Russia)
Maria Luisa Rastello, Istituto Elettrotecnico Nazionale Galileo Ferraris (Italy)


Published in SPIE Proceedings Vol. 5551:
Quantum Communications and Quantum Imaging II
Ronald E. Meyers; Yanhua Shih, Editor(s)

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