arXiv:1502.07649v1
We report a comprehensive approach to analysing continuous-output photon detectors. We em- ploy principal component analysis to maximise the information extracted, followed by a novel noise- tolerant parameterised approach to the tomography of PNRDs. We further propose a measure for rigorously quantifying a detector’s photon-number-resolving capability. Our approach applies to all detectors with continuous-output signals. We illustrate our methods by applying them to experimental data obtained from a transition-edge sensor (TES) detector.