Certification of the genuine resolution of photon number-resolving detectors
Dr. Jef Pauwels - University of Geneva, Switzerland
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2026-11-16 10:10:00 ~
2026-11-16 11:00:00See event details for additional info.
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Meeting Room, 2F, QFort, NCKU
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Certification of the genuine resolution of photon number-resolving detectors
Dr. Jef Pauwels - University of Geneva, Switzerland
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DATE |
2026-11-16 |
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10:10-11:00 |
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PLACE |
Meeting Room, 2F, QFort, NCKU |
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FIELD |
Quantum Information Science |
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SPEAKER |
Dr. Jef Pauwels - University of Geneva, Switzerland |
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TITLE |
Certification of the genuine resolution of photon number-resolving detectors |
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ABSTRACT |
Photon-number-resolving (PNR) detectors are essential components of photonic quantum technologies, yet thus far, no practical metric exists to certify how many photons they can genuinely resolve in a single measurement. Here we introduce an operational framework for quantifying the capability of a PNR detector to distinguish between different numbers of photons, i.e. its genuine resolution. In turn, we develop a practical and scalable protocol for certifying the genuine resolution of a detector, which is based on coherent state probes. We apply the method to a 28-pixel photon-number-resolving superconducting nanowire single-photon detector (PNR-SNSPD) and certify genuine four-outcome resolution. Our work highlights the critical requirements in terms of detector efficiency towards achieving high genuine resolution. This approach provides an operational benchmark for PNR detectors and fills a crucial gap in the characterization of photonic quantum devices. |
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