Compact and efficient quantum frequency conversion of a fiber-pigtailed single-photon source
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Quantum frequency converters are key enabling technologies in photonic quantum information science to bridge the gap between quantum emitters and telecom photons. Here, we report a coherent frequency converter scheme combining a fiber-coupled nonlinear optical lithium niobate waveguide with a fiber-pigtailed single-photon source based on semiconductor quantum dots. Single and indistinguishable photons are converted from 925.7 nm to the telecommunication C-band, with a 48.4% end-to-end efficiency and full preservation of single-photon purity and indistinguishability. The integration of the two fiber-based modules achieving top-level performance represents an important step toward the practical interconnection of future quantum information processing systems operating at different wavelengths.
Date Issued
2026-03-01
Date Acceptance
2025-12-07
Citation
APL Quantum, 2026, 3 (1)
ISSN
2835-0103
Publisher
AIP Publishing LLC
Journal / Book Title
APL Quantum
Volume
3
Issue
1
Copyright Statement
© 2026 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Publication Status
Published
Article Number
016101
Date Publish Online
2026-01-02