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

Silicon photonics : generation of entangled photon pairs

Michele Traetta, Marco Bentivegna, Florian Kaiser, Djeylan Aktas, W. Zhang, Carlos Alonso‐Ramos, Lutfi Arif Ngah, Florent Mazeas, Tommaso Lunghi, Xavier Le Roux, Éric Cassan, Delphine Marris‐Morini, Laurent Vivien, Laurent Labonté, Sébastien Tanzilli

Published Mar 14, 2016• 0 citations
OpenAlex

Abstract

We will discuss a novel entangled photon pair source based on an on-chip silicon ring resonator, enabling the distribution of wavelength multiplexed quantum information in standard telecommunication channels. This source opens the route towards out-of-the laboratory quantum cryptography systems showing augmented bit rates.

Related papers

Silicon-chip generation of multiplexed telecom-wavelength entangled photons pairs

Michele Traetta, Marco Bentivegna, Florian Kaiser +12 more

We report the fully telecom compliant generation of photon pairs on a silicon micro-ring resonator chip. The ring cavity is designed such as to demultiplex the emitted frequency-comb like spectrum using standard off-the-shelves telecom 100 GHz dense wavelength division multiplexers (DWDM). We measure energy-time entanglement in different channel pairs with raw visibilities exceeding 97%, which paves the way for silicon photonics based quantum key distribution (QKD) with either increased bit rates, or more users.

Conference on Lasers and Electro-Optics•Jan 1, 2016•0 citations

Photon Pairs from a Silicon Photonic Chip

Ranjeet Kumar

Photon pair sources with the capability to tune the wavelength and correlation properties of the generated photons can be useful for quantum applications such as communication, sensing, and computing. Silicon devices based on the SOI (silicon-on-insulator) platform benefits from both tight modal confinement, due to high index contrast between core and cladding, and CMOS compatible manufacturing process, making it a suitable platform for such sources. In the present work, we discuss the possibility of using planar resonant silicon devices with bend radii of a few tens of microns as photon pair sources. We discuss that a silicon nanophotonic chip consisting of either a single microring or coupled microrings can be used to generate photon pairs around 1.55 um. We discuss that the photons are generated in multiple pairs of wavelengths and can be tuned over several nanometers, demonstrating the capability to generate wavelength division multiplexed photon pairs at freely chosen telecommunication-band wavelengths. Further on, we discuss the ease of control over the bi-photon spectrum of the generated photon pairs and its implication in controlling their correlation properties. Uncorrelated photon pairs can be used to herald a single photon, and correlated photon pairs can be used in various quantum applications such as communication and sensing. In the end, we discuss the design parameters of a single microring resonator based sources.

•Jan 1, 2016•0 citations

Silicon Quantum Photonic Sources and Circuits

Erman Engin, Damien Bonneau, Joshua W. Silverstone +13 more

Elementary components required for photonic quantum information processing are realised in a silicon-on-insulator platform. On-chip quantum interference, manipulation of entangled states and photon-pair generation in a ring resonator with record high coincidental-to-accidental rates are demonstrated.

Conference on Lasers and Electro-Optics•Jan 1, 2012•0 citations

Silicon photonics for entangled photons

Shayan Mookherjea

Micro-chips using silicon photonics can generate entangled photons using low power at telecommunications wavelengths and at room temperature. With further development, such compact chips might replace traditional crystal-based or fiber-based bulky photon-generation sources.

Asia Communications and Photonics Conference•Jan 1, 2016•0 citations

Qubit entanglement between ring-resonator photon-pair sources on a silicon chip

Joshua W. Silverstone, Raffaele Santagati, Damien Bonneau +4 more

Entanglement--one of the most delicate phenomena in nature--is an essential resource for quantum information applications. Scalable photonic quantum devices must generate and control qubit entanglement on-chip, where quantum information is naturally encoded in photon path. Here we report a silicon photonic chip that uses resonant-enhanced photon-pair sources, spectral demultiplexers and reconfigurable optics to generate a path-entangled two-qubit state and analyse its entanglement. We show that ring-resonator-based spontaneous four-wave mixing photon-pair sources can be made highly indistinguishable and that their spectral correlations are small. We use on-chip frequency demultiplexers and reconfigurable optics to perform both quantum state tomography and the strict Bell-CHSH test, both of which confirm a high level of on-chip entanglement. This work demonstrates the integration of high-performance components that will be essential for building quantum devices and systems to harness photonic entanglement on the large scale.

arXiv:1410.8332•Nature Communications•Aug 6, 2015•270 citations

Entanglement measurement of a coupled silicon microring photon pair source

Ranjeet Kumar, Marc Savanier, Jun Rong Ong +1 more

Using two-photon (Franson) interferometry, we measure the entanglement of photon pairs generated from an optically-pumped silicon photonic device consisting of a few coupled microring resonators. The pair-source chip operates at room temperature, and the InGaAs single-photon avalanche detectors (SPADs) are thermo-electrically cooled to 234K. Such a device can be integrated with other components for practical entangled photon-pair generation at telecommunications wavelengths.

Optics Express•Jul 16, 2015•59 citations
We report the fully telecom compliant generation of photon pairs on a silicon micro-ring resonator chip. The ring cavity is designed such as to demultiplex the emitted frequency-comb like spectrum using standard off-the-shelves telecom 100 GHz dense wavelength division multiplexers (DWDM). We measure energy-time entanglement in different channel pairs with raw visibilities exceeding 97%, which paves the way for silicon photonics based quantum key distribution (QKD) with either increased bit rates, or more users.
Photon pair sources with the capability to tune the wavelength and correlation properties of the generated photons can be useful for quantum applications such as communication, sensing, and computing. Silicon devices based on the SOI (silicon-on-insulator) platform benefits from both tight modal confinement, due to high index contrast between core and cladding, and CMOS compatible manufacturing process, making it a suitable platform for such sources. In the present work, we discuss the possibility of using planar resonant silicon devices with bend radii of a few tens of microns as photon pair sources. We discuss that a silicon nanophotonic chip consisting of either a single microring or coupled microrings can be used to generate photon pairs around 1.55 um. We discuss that the photons are generated in multiple pairs of wavelengths and can be tuned over several nanometers, demonstrating the capability to generate wavelength division multiplexed photon pairs at freely chosen telecommunication-band wavelengths. Further on, we discuss the ease of control over the bi-photon spectrum of the generated photon pairs and its implication in controlling their correlation properties. Uncorrelated photon pairs can be used to herald a single photon, and correlated photon pairs can be used in various quantum applications such as communication and sensing. In the end, we discuss the design parameters of a single microring resonator based sources.
Entanglement--one of the most delicate phenomena in nature--is an essential resource for quantum information applications. Scalable photonic quantum devices must generate and control qubit entanglement on-chip, where quantum information is naturally encoded in photon path. Here we report a silicon photonic chip that uses resonant-enhanced photon-pair sources, spectral demultiplexers and reconfigurable optics to generate a path-entangled two-qubit state and analyse its entanglement. We show that ring-resonator-based spontaneous four-wave mixing photon-pair sources can be made highly indistinguishable and that their spectral correlations are small. We use on-chip frequency demultiplexers and reconfigurable optics to perform both quantum state tomography and the strict Bell-CHSH test, both of which confirm a high level of on-chip entanglement. This work demonstrates the integration of high-performance components that will be essential for building quantum devices and systems to harness photonic entanglement on the large scale.