title: Absolute efficiency estimation of photon-number-resolving detectors using twin beams.
abstract: A nonclassical light source is used to demonstrate experimentally the absolute efficiency calibration of a photon-number-resolving detector. The photon-pair detector calibration method developed by Klyshko for single-photon detectors is generalized to take advantage of the higher dynamic range and additional information provided by photon-number-resolving detectors. This enables the use of brighter twin-beam sources including amplified pulse pumped sources, which increases the relevant signal and provides measurement redundancy, making the calibration more robust.
authors.affiliation: University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, United Kingdom.
authors.forename: A P
authors.initials: AP
authors.lastname: Worsley
authors.forename: H B
authors.initials: HB
authors.lastname: Coldenstrodt-Ronge
authors.forename: J S
authors.initials: JS
authors.lastname: Lundeen
authors.forename: P J
authors.initials: PJ
authors.lastname: Mosley
authors.forename: B J
authors.initials: BJ
authors.lastname: Smith
authors.forename: G
authors.initials: G
authors.lastname: Puentes
authors.forename: N
authors.initials: N
authors.lastname: Thomas-Peter
authors.forename: I A
authors.initials: IA
authors.lastname: Walmsley