Reddy, D.
, Nerem, R.
, Nam, S.
, Mirin, R.
and Verma, V.
(2020),
Superconducting nanowire single-photon detectors with 98% system detection efficiency at 1550 nm, Optica, [online], https://doi.org/10.1364/OPTICA.400751
(Accessed December 21, 2024)
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Superconducting nanowire single-photon detectors with 98% system detection efficiency at 1550 nm
Published
Author(s)
, Robert R. Nerem, , ,
Abstract
Superconducting nanowire single-photon detectors (SNSPDs) are an enabling technology for a myriad of quantum-optics experiments that require high-efficiency detection, large count rates, and precise timing resolution. The system detection efficiency (SDE) for fiber-coupled SNSPDs have fallen short of theoretical predictions by at least 7%, with the discrepancy being attributed to scattering, material absorption, and other SNSPD dynamics. We optimize the design and fabrication of an all-dielectric layered stack and fiber coupling package in order to achieve 98.0 +/- 0.5% SDE for single-mode-fiber guided photons derived from a highly-attenuated 1550 nm continuous-wave laser. This enforces a smaller bound on the scattering and absorption losses in such systems and opens the use of SNSPDs for multi-photon coincident event scenarios which demand high-SDE for throughput and fidelity.Citation
Optica
Volume
7
Issue
12
Pub Type
Journals
Download Paper
Keywords
SNSPD, photon, single, detector, superconductor, record, efficiency, NIR, near-IR, NIR
Citation
Issues
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Created November 23, 2020, Updated May 5, 2023