Multiplexed SNSPDs with model-informed characterization and quantum detector tomography achieve photon counting up to 9000+ photons with 4.1 dB sub-Poissonian performance and sub-single-photon precision to 276 photons.
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Macroscopic photon counting beating the Poisson noise limit
Multiplexed SNSPDs with model-informed characterization and quantum detector tomography achieve photon counting up to 9000+ photons with 4.1 dB sub-Poissonian performance and sub-single-photon precision to 276 photons.