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Characterizing Quantum Detectors by Wigner Functions

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Abstract

We propose a scheme for characterizing a photodetector by directly reconstructing the Wigner functions of the detector’s Positive-Operator-Valued Measure (POVM) elements, using displaced thermal mixtures as probes. We report our experimental progress on characterizing a superconducting transition-edge sensor.

© 2020 The Author(s)

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