Temporal array with superconducting nanowire single-photon detectors for photon-number-resolution
| Autor: | Gunnar Björk, Val Zwiller, Mattias Jönsson, Samuel Gyger, Marcin Swillo |
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| Rok vydání: | 2020 |
| Předmět: |
Superconductivity
Physics Quantum Physics Photon business.industry Physics::Instrumentation and Detectors Detector Nanowire FOS: Physical sciences 01 natural sciences Signal 010305 fluids & plasmas 3. Good health Optics 0103 physical sciences Quantum efficiency High Energy Physics::Experiment 010306 general physics business Quantum Physics (quant-ph) Realization (systems) Order of magnitude |
| DOI: | 10.48550/arxiv.2009.08334 |
| Popis: | We present an experimental realization of a 16 element, temporal-array, photon-number-resolving (PNR) detector, which is a multiplexed single-photon detector that splits an input signal over multiple time-bins, and the time-bins are detected using two superconducting nanowire single-photon detectors (SNSPD). A theoretical investigation of the PNR capabilities of the detector is performed and it is concluded that compared to a single-photon detector, our array detector can resolve one order of magnitude higher mean photon numbers, given the same number of input pulses to measure. This claim is experimentally verified and we show that the detector can accurately predict photon numbers between $10^{-3}$ to $10^{2}$. Our present detector is incapable of single-shot photon-number measurements with high precision since its effective quantum efficiency is $49\,\%$. Using SNSPDs with a higher quantum efficiency the PNR performance will improve, but the photon-number resolution will still be limited by the array size. Comment: 8 pages, 5 figures |
| Databáze: | OpenAIRE |
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