1. How noise affects quantum detector tomography.
- Author
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Wang, Q., Renema, J. J., Gaggero, A., Mattioli, F., Leoni, R., van Exter, M. P., and de Dood, M. J. A.
- Subjects
PHYSIOLOGICAL effects of noise ,QUANTUM optics ,TOMOGRAPHY ,SUPERCONDUCTORS ,NANOWIRES - Abstract
We determine the full photon number response of a NbN superconducting nanowire single photon detector via quantum detector tomography, and the results show the separation of linear, effective absorption efficiency from the internal detection efficiencies. In addition, we demonstrate an error budget for the complete quantum characterization of the detector. We find that for short times, the dominant noise source is shot noise, while laser power fluctuations limit the accuracy for longer timescales. The combined standard uncertainty of the internal detection efficiency derived from our measurements is about 2%. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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