Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Heralded single-photon source based on intermodal four-wave mixing in a few-mode fiber

Erik Nicolai Christensen, Jesper B. Christensen, Søren M. M. Friis, Jacob G. Koefoed, Mario A. Usuga Castaneda, Karsten K. Rottwitt

Published Jan 1, 2018• 0 citations
Publisher

Abstract

We experimentally demonstrate a heralded single-photon source based on intermodal four-wave mixing in a step-index few-mode fiber, and measure a maximum coincidence-to-accidental ratio of 39, and a g(2)(0) of 0.13.
DOI
10.1364/cleo_qels.2018.fm3g.3

Related papers

Near-infrared photon-pair generation by intermodal four-wave mixing in a few-mode fiber

Erik Nicolai Christensen, Søren M. M. Friis, Jacob G. Koefoed +2 more

We demonstrate a photon-pair source based on intermodal four-wave mixing in a few-mode fiber generating photons at 965 nm and 1187 nm in the LP01 and LP02 modes, respectively, with a coincidence-to-accidental ratio of 12.

Frontiers in Optics•Jan 1, 2017•1 citation

Generation of quantum correlated photons in different spatial modes using few-mode fibers

Cheng Guo, Jie Su, Zhenzhen Zhang +2 more

We generate photon pairs at 1550 nm telecom through the intermodal four-wave mixing between LP01 and LP11 mode in a few-mode fiber. The ratio of coincidence to accidental coincidence rates is measured to be 28.

Frontiers in Optics•Jan 1, 2018•0 citations

Photon-Pair Sources Based on Intermodal Four-Wave Mixing in Few-Mode Fibers

Karsten K. Rottwitt, Jacob G. Koefoed, Erik Nicolai Christensen

Four-wave mixing in optical fibers has been proven to have many applications within processing of classical optical signals. In addition, recent developments in multimode fibers have made it possible to achieve the necessary phase-matching for efficient four-wave mixing over a very wide bandwidth. Thus, the combination of multimode fiber optics and four-wave mixing is very attractive for various applications. This is especially the case for applications in quantum communication, for example in photon-pair generation. This is the subject of this work, where we discuss the impact of fluctuations in core radius on the quality of the heralded single-photon states and demonstrate experimental results of intermodal spontaneous four-wave mixing for photon-pair generation.

Fibers•May 21, 2018•35 citations

Fiber Source of Spectrally Uncorrelated Photon Pairs Based on Intermodal Four-Wave Mixing

Kasper Alexander, Rodrigo da SILVA, Jacob G. Koefoed +2 more

Using intermodal four-wave mixing (FWM) in an optical step-index fiber, we demonstrate a process capable of generating photon pairs with low spectral correlations without the need for optical filtering of the FWM sideband.

•Jan 1, 2024•0 citations

Intermodal four-wave mixing for heralded single-photon sources in the MIR (Conference Presentation)

Stefano Signorini, Sara Piccione, Matteo Finazzer +4 more

Single photon sources by heralding time correlated photons are described. By intermodal four wave mixing (FWM) in a silicon photon circuit, we generate a herald photon at 1260 nm and the heralded one beyond 2 um, with a coincidence to accidental ratio larger than 50 and a single photon purity of 0.75. The discrete band intermodal phase matching does not require further filtering to improve the purity of the single photon. Moreover, the intermodal FWM exhibits high controllability of the signal/idler wavelengths, that can be generated far from the Raman and pump noise, with improved noise filtering.

Smart Photonic and Optoelectronic Integrated Circuits•Mar 9, 2020•0 citations

Spectrally Bright and Broad Fiber-Based Heralded Single-Photon Source

Elizabeth A. Goldschmidt, Matthew D. Eisaman, Jingyun Fan +3 more

We report the development of a spectrally bright and broad heralded single-photon source based on spontaneous four-wave-mixing in a single-mode fiber, measuring the second-order correlation function, g(2)(0), far below unity over a broad spectral range.

International Conference on Quantum Information•Jan 1, 2008•3 citations
Four-wave mixing in optical fibers has been proven to have many applications within processing of classical optical signals. In addition, recent developments in multimode fibers have made it possible to achieve the necessary phase-matching for efficient four-wave mixing over a very wide bandwidth. Thus, the combination of multimode fiber optics and four-wave mixing is very attractive for various applications. This is especially the case for applications in quantum communication, for example in photon-pair generation. This is the subject of this work, where we discuss the impact of fluctuations in core radius on the quality of the heralded single-photon states and demonstrate experimental results of intermodal spontaneous four-wave mixing for photon-pair generation.
Single photon sources by heralding time correlated photons are described. By intermodal four wave mixing (FWM) in a silicon photon circuit, we generate a herald photon at 1260 nm and the heralded one beyond 2 um, with a coincidence to accidental ratio larger than 50 and a single photon purity of 0.75. The discrete band intermodal phase matching does not require further filtering to improve the purity of the single photon. Moreover, the intermodal FWM exhibits high controllability of the signal/idler wavelengths, that can be generated far from the Raman and pump noise, with improved noise filtering.