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

Ultra-Bright Narrow-Band Down-Conversion Source for Atom-Photon Interaction

Florian Wolfgramm, Xingxing Xing, Alessandro Ceré, Ana Predojević, Aephraim M. Steinberg, Morgan W. Mitchell

Published Jan 1, 2009• 0 citations
Publisher

Abstract

We describe an ultra bright source of narrow band pairs of indistinguishable photons based on cavity enhanced down conversion. This source is suitable for experiments on light matter interactions at the single photon level.
DOI
10.1364/iqec.2009.ithm1

Related papers

Ultra-bright Source of Indistinguishable Single Photons

Alisa Javadi, Natasha Tomm, Nadia O. Antoniadis +8 more

We demonstrate an ultra-bright source of coherent single photons with an average end-to-end efficiency of 55%. By the virtue of our record efficiency, a 20-photon quantum protocol will run seven orders of magnitude faster than the state-of-the-art.

Frontiers in Optics•Jan 1, 2020•0 citations

Ultra-bright narrow-band down-conversion source for atom-photon interaction

Florian Wolfgramm, Xingxing Xing, Alessandro Ceré +3 more

There has been increasing interest in the generation of such photon pairs using a spontaneous parametric down-conversion (SPDC) source inside an optical cavity to enhance the down-conversion into modes resonant to the cavity, each of the modes having a MHz spectrum. These optical parametric oscillators (OPO) operated far below threshold also provide a well defined spatial mode. Our setup consists of a bow-tie cavity with a periodically poled KTP crystal as nonlinear medium, phase-matched for parametric down-conversion. This photon-pair source is designed to provide photons suitable for interaction with atoms. These photons could be directly used in applications towards a quantum memory of light, like in experiments on slow light or the storage of single photons in EIT media. In this way an optical polarization rotation in an atomic sample could be measured achieving super-resolution.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 1, 2009•0 citations

Development and Characterization of Cavity-Enhanced Bright Parametric Down-Conversion Single-Photon Source Tailored To Match Frequency and Bandwidth of InAs Quantum Dots for Quantum Information Protocols

Uttam Paudel, Jia Jun Wong, A. P. Burgers +3 more

Bulletin of the American Physical Society•Mar 17, 2017•0 citations

Bright Photon Pair Source with High Spectral and Spatial Purity

Warren P. Grice, Ryan S. Bennink, Philip G. Evans +2 more

We report the design and experimental characterization of a down-conversion source optimized for high spectral and spatial purity. Spatial and spectral entanglement are minimized through careful control of pump properties and material parameters.

International Conference on Quantum Information•Jan 1, 2011•1 citation

Sub-megahertz narrow-band photon pairs at 606 nm for solid-state quantum memories

Jianji Liu, Jiachen Liu, Ping Yu +1 more

We report on the development of a source of ultra-narrow-band photon pairs using the cavity-enhanced spontaneous parametric down conversion. The photon-pair source has a bandwidth of 265 ± 15 kHz at 606 nm and a spectral brightness of 216 ± 5 pairs/(s · mW · MHz) per longitudinal mode, which could be suitable for Pr3+ ion-based solid-state quantum memories.

APL Photonics•Jun 1, 2020•33 citations

Novel single-mode narrow-band photon source of high brightness tuned to cesium D2 line

Amir Moqanaki, Francesco Massa, Philip Walther

Cavity-enhanced spontaneous parametric down-conversion is capable of efficient generation of single photons with suitable spectral properties for interfacing with the atoms. However, beside the remarkable progress of this technique, multimode longitudinal emission remains a major drawback. Here, we demonstrate a bright source of single photons that overcomes this limitation by a novel mode-selection technique based on the introduction of an additional birefringent element to the cavity. This enables us to tune the double resonance condition independent of the phase matching and thus to achieve single-mode operation without mode filters. Our source emits single-frequency-mode photons at 852 nm, which is compatible to the Cs D2 line, with a bandwidth of 10.9 MHz and a detected photon-pair rate of 2.5 kHz at 10 mW of pump power, while maintaining g(2)(0) = 0.13. The efficiency of our source is further underlined by detecting a four-photon rate of 0.28 Hz at 20 mW of pump power. These detected rates correspond to a photon-pair generation rate of 47.5 Hz, and a four-photon generation rate of 37 Hz. Such photon generation rates open up a variety of new applications reaching from hybrid light-matter interactions to optical quantum information tasks based on long temporal coherence.

arXiv:1810.02430•APL Photonics•Sep 1, 2019•26 citations
There has been increasing interest in the generation of such photon pairs using a spontaneous parametric down-conversion (SPDC) source inside an optical cavity to enhance the down-conversion into modes resonant to the cavity, each of the modes having a MHz spectrum. These optical parametric oscillators (OPO) operated far below threshold also provide a well defined spatial mode. Our setup consists of a bow-tie cavity with a periodically poled KTP crystal as nonlinear medium, phase-matched for parametric down-conversion. This photon-pair source is designed to provide photons suitable for interaction with atoms. These photons could be directly used in applications towards a quantum memory of light, like in experiments on slow light or the storage of single photons in EIT media. In this way an optical polarization rotation in an atomic sample could be measured achieving super-resolution.
Cavity-enhanced spontaneous parametric down-conversion is capable of efficient generation of single photons with suitable spectral properties for interfacing with the atoms. However, beside the remarkable progress of this technique, multimode longitudinal emission remains a major drawback. Here, we demonstrate a bright source of single photons that overcomes this limitation by a novel mode-selection technique based on the introduction of an additional birefringent element to the cavity. This enables us to tune the double resonance condition independent of the phase matching and thus to achieve single-mode operation without mode filters. Our source emits single-frequency-mode photons at 852 nm, which is compatible to the Cs D2 line, with a bandwidth of 10.9 MHz and a detected photon-pair rate of 2.5 kHz at 10 mW of pump power, while maintaining g(2)(0) = 0.13. The efficiency of our source is further underlined by detecting a four-photon rate of 0.28 Hz at 20 mW of pump power. These detected rates correspond to a photon-pair generation rate of 47.5 Hz, and a four-photon generation rate of 37 Hz. Such photon generation rates open up a variety of new applications reaching from hybrid light-matter interactions to optical quantum information tasks based on long temporal coherence.