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Related Experiment Video

Updated: May 19, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

High-fidelity single-photon source based on a Type II optical parametric oscillator.

Olivier Morin1, Virginia D'Auria, Claude Fabre

  • 1Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure, CNRS, Paris, France.

Optics Letters
|September 4, 2012
PubMed
Summary

We developed a new source for high-fidelity heralded single photons using a below-threshold optical parametric oscillator. This breakthrough is crucial for advancing quantum information processing applications.

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Area of Science:

  • Quantum Optics
  • Quantum Information Science

Background:

  • Single-photon sources are essential for quantum technologies.
  • Previous sources often suffer from low fidelity or multi-photon components.

Purpose of the Study:

  • To demonstrate a novel source of heralded single photons with high fidelity.
  • To enable robust quantum information processing.

Main Methods:

  • Utilized a continuous-wave Type II optical parametric oscillator operated below threshold.
  • Characterized the generated photon state using homodyne detection.

Main Results:

  • Achieved high-fidelity single photons with 79% fidelity to a Fock state (91% corrected for detection loss).
  • Demonstrated low vacuum admixture and a well-defined spatiotemporal mode.

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Related Experiment Videos

Last Updated: May 19, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Conclusions:

  • The developed source meets critical requirements for quantum information processing.
  • This method offers a promising route for generating high-quality single photons.