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

Indistinguishable Photon-Pairs from Pure and Bright Silicon Micro-ring Resonator Sources

Imad I. Faruque, D. Llewellyn, Yunhong Ding, Stefano Paesani, Raffaele Santagati, Damien Bonneau, Gary F. Sinclair, Davide Bacco, Karsten K. Rottwitt, Leif Katsuo Oxenløwe, Jeremy L. O’Brien, J. Wang, John G. Rarity, Mark G. Thompson

Published Jan 1, 2018• 0 citations
Publisher

Abstract

We report on-chip interference fringes of very high visibility 89% from heralded single photons from separate ultra-bright silicon micro-ring resonator sources as 4-fold coincidences. The reconfigurable chip is also used to measure multipair fringes and conditional g H ( 2 ) ( 0 ) of single photons.
DOI
10.1364/cleo_qels.2018.fth1g.5

Related papers

On-chip quantum interference with heralded photons from two independent micro-ring resonator sources in silicon photonics

Imad I. Faruque, Gary F. Sinclair, Damien Bonneau +2 more

High visibility on-chip quantum interference among indistinguishable single-photons from multiples sources is a key prerequisite for integrated linear optical quantum computing. Resonant enhancement in micro-ring resonators naturally enables brighter, purer and more indistinguishable single-photon production without any tight spectral filtering. The indistinguisha-bility of heralded single-photons from multiple micro-ring resonators has not been measured in any photonic platform. Here, we report on-chip indistinguishability measurements of heralded single-photons generated from independent micro-ring resonators by using an on-chip Mach-Zehnder interferometer and spectral demultiplexer. We measured the raw heralded two-photon interference fringe visibility as 72 ± 3%. This result agrees with our model, which includes device imperfections, spectral impurity and multi-pair emissions. We identify multi-pair emissions as the main factor limiting the nonclassical interference visibility, and show a route towards achieving near unity visibility in future experiments.

arXiv:1705.01029•Optics Express•Jul 26, 2018•66 citations

Heralded Quantum Interference of On-chip Micro-ring Resonator Sources in Si-photonics

Imad I. Faruque, Damien Bonneau, Gary F. Sinclair +1 more

We report a 4-photon measurement in silicon-on-isolator, demonstrating 67.31% ± 10% indistinguishability among heralded photons generated from two separate micro-resonators, and interfered on-chip. The heralded single-photon purities from each source are estimated as 86.20 ± 3.89% and 78.69 ± 2.44%.

Conference on Lasers and Electro-Optics•Jan 1, 2017•1 citation

Correlated Photon Pairs Generation from a Silicon Micro-Ring resonator with a Gain-Switched Laser Diode

Fan Yang, Masaki Fukunaga, Keiichi Edamatsu +3 more

A compact heralded single photon source is required in quantum technologies. For an integrated chip-scale photon pair source, we demonstrate the generation of correlated photon pairs from a silicon micro-ring resonator with a semiconductor laser source.

Microoptics Conference•Sep 26, 2021•2 citations

Interference of heralded single photons generated in silicon waveguide sources

Gary F. Sinclair

Quantum interference between identical photons lies at the heart of our plan to construct a silicon photonic quantum computer. Several ground-breaking experiments have demonstrated the on-chip interference between photons generated in spiral [1] and ring resonator [2] sources. However, these two-photon experiments have relied on detecting the simultaneous arrival of a pair of photons from either source. In order that such experiments can be scaled-up, we require the multiplexing of probabilistic photon pair sources into an on-demand single photon source [3]. A first step towards this is to demonstrate heralded single photons from different sources will retain the purity and indistinguishability required to interfere with high visibility [4]. In our work we examine photon pair production by spontaneous four-wave mixing in a silicon waveguide source and determine the factors that limit the heralded two-photon interference visibility. We present a novel approach to modelling this generation process using the joint- temporal amplitude and compare our results with experimental data. [1] On-chip quantum interference between silicon photon-pair sources, Nature Photonics 8, 104, (2014). [2] Qubit entanglement between ring-resonator photon-pair sources on a silicon chip, Nature Communications 6, 7948, (2015). [3] Active temporal and spatial multiplexing of photons, Optica 3, 127, (2016) [4] Indistinguishable photon pair generation using two independent silicon wire waveguides, New Journal of Physics 13, 065005, (2011).

•Jan 1, 2016•0 citations

Tunable, High Purity Two-Photon Interference From Independent Sources On a Silicon Photonic Chip

John R. Serafini, Matthew van Niekerk, Michael L. Fanto +1 more

We successfully demonstrate tunable quantum interference between two micro-ring sources on a silicon photonic chip. Additionally, we show that the visibility can be optimized based on the tunable coupling to the integrated sources.

IEEE Photonics Conference•Oct 1, 2021•0 citations

Quantum interference of multiple on-chip heralded sources of pure single photons

Justin B. Spring, Patrick S. Salter, Paolo L. Mennea +13 more

We demonstrate generation of heralded single photons in silica photonic chips with a preparation efficiency of 80% and single photon purity of 0.86. We show multiple indistinguishable photon sources on a single chip with HOM-dip visibilities of up to 95%.

Research in Optical Sciences•Jan 1, 2014•5 citations
High visibility on-chip quantum interference among indistinguishable single-photons from multiples sources is a key prerequisite for integrated linear optical quantum computing. Resonant enhancement in micro-ring resonators naturally enables brighter, purer and more indistinguishable single-photon production without any tight spectral filtering. The indistinguisha-bility of heralded single-photons from multiple micro-ring resonators has not been measured in any photonic platform. Here, we report on-chip indistinguishability measurements of heralded single-photons generated from independent micro-ring resonators by using an on-chip Mach-Zehnder interferometer and spectral demultiplexer. We measured the raw heralded two-photon interference fringe visibility as 72 ± 3%. This result agrees with our model, which includes device imperfections, spectral impurity and multi-pair emissions. We identify multi-pair emissions as the main factor limiting the nonclassical interference visibility, and show a route towards achieving near unity visibility in future experiments.
Quantum interference between identical photons lies at the heart of our plan to construct a silicon photonic quantum computer. Several ground-breaking experiments have demonstrated the on-chip interference between photons generated in spiral [1] and ring resonator [2] sources. However, these two-photon experiments have relied on detecting the simultaneous arrival of a pair of photons from either source. In order that such experiments can be scaled-up, we require the multiplexing of probabilistic photon pair sources into an on-demand single photon source [3]. A first step towards this is to demonstrate heralded single photons from different sources will retain the purity and indistinguishability required to interfere with high visibility [4]. In our work we examine photon pair production by spontaneous four-wave mixing in a silicon waveguide source and determine the factors that limit the heralded two-photon interference visibility. We present a novel approach to modelling this generation process using the joint- temporal amplitude and compare our results with experimental data. [1] On-chip quantum interference between silicon photon-pair sources, Nature Photonics 8, 104, (2014). [2] Qubit entanglement between ring-resonator photon-pair sources on a silicon chip, Nature Communications 6, 7948, (2015). [3] Active temporal and spatial multiplexing of photons, Optica 3, 127, (2016) [4] Indistinguishable photon pair generation using two independent silicon wire waveguides, New Journal of Physics 13, 065005, (2011).