Reducing $g^{(2)}(0)$ of a parametric down-conversion source via photon-number resolution with superconducting nanowire detectors
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Accepted version
Author(s)
Sempere-Llagostera, Santiago
Thekkadath, Guillaume
Patel, Raj
Kolthammer, W Steven
Walmsley, Ian
Type
Journal Article
Abstract
Multiphoton contributions pose a significant challenge for the realisation of heralded single-photon sources (HSPS) based on nonlinear processes. In this work, we improve the quality of single photons generated in this way by harnessing the photon-number resolving (PNR) capabilities of commercial superconducting nanowire single-photon detectors (SNSPDs). We report a 13 ± 0.4% reduction of g(2)(τ = 0), even with a collection efficiency in the photon source of only 29.6%. Our work demonstrates the first application of the PNR capabilities of SNSPDs and shows improvement in the quality of an HSPS with widely available technology.
Date Acceptance
2022-01-06
Citation
Optics Express, 30 (2), pp.3138-3147
ISSN
1094-4087
Publisher
Optical Society of America (OSA)
Start Page
3138
End Page
3147
Journal / Book Title
Optics Express
Volume
30
Issue
2
Copyright Statement
Journal © 2022 Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License.
Further distribution of this work must maintain attribution to the author(s) and the published article’s title,
journal citation, and DOI.
Further distribution of this work must maintain attribution to the author(s) and the published article’s title,
journal citation, and DOI.
License URL
Sponsor
Commission of the European Communities
Engineering & Physical Science Research Council (E
Identifier
https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-2-3138&id=468509
Grant Number
956017
EP/T001062/1
Subjects
quant-ph
quant-ph
physics.ins-det
physics.optics
0205 Optical Physics
0906 Electrical and Electronic Engineering
1005 Communications Technologies
Optics
Publication Status
Published online