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19 October 2004 Experimental realization of a measurement conditional unitary operation at single photon level and application to detector characterization
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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.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marco Genovese, Giorgio Brida, Maria Chekhova, Marco Gramegna, Leonid Krivitsky, Sergej Kulik, and Maria Luisa Rastello "Experimental realization of a measurement conditional unitary operation at single photon level and application to detector characterization", Proc. SPIE 5551, Quantum Communications and Quantum Imaging II, (19 October 2004); https://doi.org/10.1117/12.561416
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