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Absolute quantum efficiency measurements by means of conditioned polarization rotation

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6 Author(s)
Brida, G. ; Inst. Elettrotecnico Nazionale "Galileo Ferraris", Torino, Italy ; Chekhova, M. ; Genovese, M. ; Gramegna, M.
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We propose a new scheme for measuring the quantum efficiency of photon counting detectors by using correlated photons. The measurement technique is based on a 90° rotation of the polarization of one photon member of a correlated pair produced by parametric down-conversion, conditioned on the detection of the other correlated photon after polarization selection. We present experimental results obtained with this scheme.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:54 ,  Issue: 2 )