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Second order parametric processes in nonlinear silica microspheres.

Yong Xu1, Ming Han, Anbo Wang

  • 1Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.

Physical Review Letters
|June 4, 2008
PubMed
Summary
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Researchers achieved ultralow threshold parametric oscillation in nonlinear microspheres, enabling efficient generation of quantum entangled photon pairs while conserving angular momentum.

Area of Science:

  • Nonlinear optics
  • Quantum optics
  • Photonics

Background:

  • Parametric processes are fundamental in nonlinear optics.
  • High-Q microspheres offer enhanced light-matter interaction.
  • Angular momentum conservation is crucial in optical phenomena.

Purpose of the Study:

  • To investigate second-order parametric processes in nonlinear microspheres.
  • To achieve ultralow threshold parametric oscillation.
  • To explore the generation of quantum entangled photon pairs.

Main Methods:

  • Analysis of second-order parametric processes.
  • Utilizing a silica microsphere coated with nonlinear optical molecules.
  • Employing high-Q factor resonators.

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Last Updated: Jul 4, 2026

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Published on: April 4, 2016

Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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Published on: January 29, 2013

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Main Results:

  • Demonstrated ultralow threshold parametric oscillation.
  • Confirmed adherence to angular momentum conservation rules.
  • Identified symmetry-based methods for generating entangled photon pairs.

Conclusions:

  • Nonlinear microspheres enable efficient parametric oscillation.
  • Quantum entangled photon pairs can be generated via symmetry.
  • Practical implementation challenges are considered.