Reducing g(2)(0) of a parametric down-conversion source via photon-number resolution with superconducting nanowire detectors

被引：12

作者：

Sempere-Llagostera, S. ^{[1
]}

Thekkadath, G. S. ^{[1
,2
]}

Patel, R. B. ^{[1
,3
]}

Kolthammer, W. S. ^{[1
]}

Walmsley, I. A. ^{[1
]}

机构：

[1] Imperial Coll London, Dept Phys, Prince Consort Rd, London SW7 2AZ, England

[2] Natl Res Council Canada, 100 Sussex Dr, Ottawa, ON K1A 0R6, Canada

[3] Univ Oxford, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England

来源：

OPTICS EXPRESS | 2022年 / 30卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

AVALANCHE-PHOTODIODE; REALIZATION;

D O I：

10.1364/OE.450172

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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)) (tau = 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. Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License.

引用

页码：3138 / 3147

页数：10

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