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 Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

Highly Correlated Photon-Pair Generation from a Silicon Waveguide Integrated with on-Chip Pump-Rejection Filters

Jong-Moo Lee, Wook‐Jae Lee, Minsu Kim, Jung Jin Ju

Published Jun 1, 2019• 0 citations
Publisher

Abstract

Silicon photonics is an attractive technology toward an integrated quantum optical platform including quantum-correlated photon-pair sources and interference circuits [1-3]. Photon pairs can be generated based on spontaneous four-wave mixing (SFWM) with a strong pump field, but the co-propagating pump field should be separated by high-extinction pump-rejection filters (PRFs) [2, 3].

DOI
10.1109/cleoe-eqec.2019.8872883

Related papers

Tunable Source of Quantum-Correlated Photons with Integrated Pump Rejection in a Silicon CMOS Platform

Josep M. Fargas Cabanillas, Danielius Kramnik, Anirudh Ramesh +4 more

A wavelength-tunable, silicon photon-pair source based on spontaneous four-wave mixing, integrated with a pump rejection filter in a single, flip-chip packaged CMOS chip, is demonstrated with a coincidence-to-accidentals ratio of 9.1 with no off-chip pump filtering.

Frontiers in Optics•Jan 1, 2021•6 citations

Quantum correlated photon-pair generation in silicon waveguides with on-chip notch filtering of pump laser

Jung Jin Ju, Jong-Moo Lee, Wook‐Jae Lee +1 more

We integrate a silicon waveguide spiral followed by on-chip cascaded Mach-Zehnder interferometers(MZIs) on a single chip. The silicon waveguide generates photon pairs by spontaneous four-wave mixing and the MZI filters separate the co-propagating pump (tel: +1 202.416.6191, e-mail: cstech@osa.org). © 2019 The Author(s)

Nonlinear Optics•Jan 1, 2019•0 citations

On-Chip Photon Pair Source with Pump Rejection Filter

Dorian Oser, Florent Mazeas, Carlos Alonso‐Ramos +5 more

Integrated photon-pair sources are fundamental building blocks of any quantum circuit. Spontaneous four-wave mixing in Si micro-resonators has already shown efficient on-chip generation of entangled photon pairs. However, owing to the substantially higher pump intensity, compared to that of the photon-pair signal, suppression of the pump requires rejection levels exceeding 100 dB. Besides strong pump suppression, narrow rejection bandwidth (<; 10 nm) is particularly important to allow short wavelength separation of the paired photons, thereby minimizing dispersion effects in the micro-ring that may reduce the efficiency of the nonlinear process. Implementing such pump-rejection filter on chip remains a challenge. Indeed, the only demonstration of photon-pair generation with on-chip pump rejection required cascading two identical chips, compromising the feasibility of the solution. The main reason for this is the limited rejection achieved by state-of-the-art on-chip Bragg filters. Ultra-high rejection has been demonstrated in actively controlled filters at the expense of increased insertion loss and a high complexity, due to the control of all the filters. Nevertheless, photon-pair generation with effective pump rejection in a single chip has not been demonstrated yet.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 1, 2019•2 citations

A compact, integrated silicon device for the generation of spectrally filtered, pair-correlated photons

Momchil Minkov, Vincenzo Savona

Abstract The third-order nonlinearity of silicon gives rise to a spontaneous four-wave mixing process in which correlated photon pairs are generated. Sources based on this effect can be used for quantum computation and cryptography, and can in principle be integrated with standard CMOS fabrication technology and components. However, one of the major challenges is the on-chip demultiplexing of the photons, and in particular the filtering of the pump power, which is many orders of magnitude larger than that of the signal and idler photons. Here, we propose a photonic crystal coupled-cavity system designed so that the coupling of the pump mode to the output channel is strictly zero due to symmetry. We further analyze this effect in the presence of fabrication disorder and find that, even then, a pump suppression of close to 40 dB can be achieved in state-of-the-art systems. Due to the small mode volumes and high quality factors, our system is also expected to have a generation efficiency much higher than in standard micro-ring systems. Those two considerations make a strong case for the integration of our proposed design in future on-chip quantum technologies.

arXiv:1602.00870•Journal of Optics•Mar 24, 2016•9 citations

Bistable Photon Pair Generation in Silicon Microring Resonator Integrated with Pump Rejection Filter

Arnab Goswami, Ram Mohan Boyapati, Bijoy Krishna Das

On-chip photon pair generation is the key to the development of scalable quantum photonic integrated circuits. We report bistable generation of entangled photon pairs via spontaneous four wave mixing in a silicon microring resonator integrated with pump rejection filter (> 45dB). The observed photon generation rate exceeds 20 MHz in one of the bistable states for a launched input power of ~0.75 mW in C band.

IEEE Electron Devices Technology & Manufacturing Conference (EDTM)•Mar 3, 2024•0 citations

Short-Wave Infrared Correlated Photons from Silicon Waveguides

Lawrence M. Rosenfeld, Dominic A. Sulway, Mark G. Thompson +2 more

Quantum technologies that harness the properties of superposition and entanglement promise to revolutionise many fields, from information processing to metrology. Silicon-integrated quantum photonics operating in the telecom band suffers from deleterious two-photon absorption (TPA) [1,2]. Cross-TPA reduces the brightness and ultimately the heralding efficiency [3] of spontaneous four-wave mixing (SFWM) photon-pair sources, where single photons necessarily co-propagate with a bright pump. Nonlinear losses can be mitigated by pumping and generating photons with energies close to and beyond silicon's two-photon band edge [4,5]. We report the first quantum-correlated photon pairs in the 2.1 μm short-wave infrared (SWIR) band, produced on-chip from a silicon waveguide spiral.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 1, 2019•0 citations
Silicon photonics is an attractive technology toward an integrated quantum optical platform including quantum-correlated photon-pair sources and interference circuits [1-3]. Photon pairs can be generated based on spontaneous four-wave mixing (SFWM) with a strong pump field, but the co-propagating pump field should be separated by high-extinction pump-rejection filters (PRFs) [2, 3].
Integrated photon-pair sources are fundamental building blocks of any quantum circuit. Spontaneous four-wave mixing in Si micro-resonators has already shown efficient on-chip generation of entangled photon pairs. However, owing to the substantially higher pump intensity, compared to that of the photon-pair signal, suppression of the pump requires rejection levels exceeding 100 dB. Besides strong pump suppression, narrow rejection bandwidth (<; 10 nm) is particularly important to allow short wavelength separation of the paired photons, thereby minimizing dispersion effects in the micro-ring that may reduce the efficiency of the nonlinear process. Implementing such pump-rejection filter on chip remains a challenge. Indeed, the only demonstration of photon-pair generation with on-chip pump rejection required cascading two identical chips, compromising the feasibility of the solution. The main reason for this is the limited rejection achieved by state-of-the-art on-chip Bragg filters. Ultra-high rejection has been demonstrated in actively controlled filters at the expense of increased insertion loss and a high complexity, due to the control of all the filters. Nevertheless, photon-pair generation with effective pump rejection in a single chip has not been demonstrated yet.
Abstract The third-order nonlinearity of silicon gives rise to a spontaneous four-wave mixing process in which correlated photon pairs are generated. Sources based on this effect can be used for quantum computation and cryptography, and can in principle be integrated with standard CMOS fabrication technology and components. However, one of the major challenges is the on-chip demultiplexing of the photons, and in particular the filtering of the pump power, which is many orders of magnitude larger than that of the signal and idler photons. Here, we propose a photonic crystal coupled-cavity system designed so that the coupling of the pump mode to the output channel is strictly zero due to symmetry. We further analyze this effect in the presence of fabrication disorder and find that, even then, a pump suppression of close to 40 dB can be achieved in state-of-the-art systems. Due to the small mode volumes and high quality factors, our system is also expected to have a generation efficiency much higher than in standard micro-ring systems. Those two considerations make a strong case for the integration of our proposed design in future on-chip quantum technologies.
Quantum technologies that harness the properties of superposition and entanglement promise to revolutionise many fields, from information processing to metrology. Silicon-integrated quantum photonics operating in the telecom band suffers from deleterious two-photon absorption (TPA) [1,2]. Cross-TPA reduces the brightness and ultimately the heralding efficiency [3] of spontaneous four-wave mixing (SFWM) photon-pair sources, where single photons necessarily co-propagate with a bright pump. Nonlinear losses can be mitigated by pumping and generating photons with energies close to and beyond silicon's two-photon band edge [4,5]. We report the first quantum-correlated photon pairs in the 2.1 μm short-wave infrared (SWIR) band, produced on-chip from a silicon waveguide spiral.