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Related Experiment Video

Updated: Apr 27, 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

13.9K

Quantum state engineering of light with continuous-wave optical parametric oscillators.

Olivier Morin1, Jianli Liu1, Kun Huang2

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

Journal of Visualized Experiments : Jove
|June 26, 2014
PubMed
Summary

Researchers generated non-Gaussian quantum states, like single-photon and superposition states, using optical parametric oscillators. This method offers a high-fidelity, heralded approach for quantum optics applications.

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Last Updated: Apr 27, 2026

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Area of Science:

  • Quantum Optics
  • Quantum Information Science

Background:

  • Engineering non-classical states of light is crucial for quantum technologies.
  • Optical parametric oscillators are efficient sources of Gaussian non-classical states like squeezed vacuum.
  • Generating non-Gaussian states directly is challenging, often requiring strong nonlinearities.

Purpose of the Study:

  • To detail a heralded, measurement-induced protocol for generating non-Gaussian states.
  • To demonstrate the generation of single-photon states and superpositions of coherent states.
  • To utilize continuous-wave optical parametric oscillators as primary resources.

Main Methods:

  • Employing a conditional preparation technique on Gaussian states.
  • Using two differently phase-matched optical parametric oscillators.
  • Leveraging measurement-induced nonlinearity.

Main Results:

  • Successful generation of non-Gaussian states, specifically single-photon and superposition states.
  • Achieved high fidelity with the targeted non-Gaussian states.
  • Generated states in a well-controlled spatiotemporal mode.

Conclusions:

  • The presented technique provides a viable method for generating essential non-Gaussian states.
  • This heralded approach overcomes challenges associated with direct non-Gaussian state generation.
  • The controlled generation opens avenues for advanced quantum protocols.