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Related Experiment Videos

Slowing light in chi2 photonic crystals.

G D'Aguanno1, M Centini, M Scalora

  • 1INFM at Dipartimento di Energetica, Università di Roma La Sapienza, Via A. Scarpa 16, I-00161 Rome, Italy. guiseppe.daguano@uniroma1.it

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 20, 2003
PubMed
Summary

Researchers slowed light in photonic crystals to 11 m/s using nonlinear frequency down-conversion. This breakthrough matches speeds seen in Bose-Einstein condensates and atomic gases.

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Area of Science:

  • Nonlinear optics
  • Condensed matter physics
  • Photonics

Background:

  • Parametric nonlinear frequency down-conversion is a key process in optics.
  • Controlling light propagation speed is crucial for quantum technologies.
  • Previous methods for slowing light, like electromagnetically induced transparency, required specific atomic or Bose-Einstein condensate systems.

Purpose of the Study:

  • To investigate the possibility of slowing down a probe field in photonic crystals.
  • To explore the underlying physical mechanisms responsible for light deceleration.
  • To compare the observed light velocities with those achieved in other exotic systems.

Main Methods:

  • Studying parametric nonlinear frequency down-conversion in engineered photonic crystal structures.

Related Experiment Videos

  • Analyzing the interplay of phase-matching conditions, field localization, and optical gain.
  • Measuring the effective velocity of the probe field under specific experimental conditions.

    • Main Results:

    • Achieved a significant reduction in the probe field's group velocity, down to approximately 11 m/s.
    • Identified simultaneous global phase-matching, field localization, and gain as critical factors.
    • Demonstrated light tunneling velocities comparable to those in coherently resonant systems.

    Conclusions:

    • Photonic crystals offer a viable platform for achieving ultra-slow light via nonlinear frequency conversion.
    • The observed phenomenon provides a new avenue for light manipulation without requiring specific atomic or Bose-Einstein condensate media.
    • This research opens possibilities for novel photonic devices and quantum information processing applications.