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Related Experiment Video

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Directional Dicke Subradiance with Nonclassical and Classical Light Sources.

Daniel Bhatti1,2, Raimund Schneider1,2, Steffen Oppel1

  • 1Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany.

Physical Review Letters
|March 31, 2018
PubMed
Summary
This summary is machine-generated.

Researchers discovered directional Dicke subradiance in quantum and thermal light sources. This phenomenon causes suppressed spontaneous emission in specific directions, offering new insights into light-matter interactions.

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Area of Science:

  • Quantum optics
  • Atomic physics
  • Photonics

Background:

  • Dicke subradiance describes suppressed spontaneous emission from quantum emitters.
  • Previous studies focused on symmetric states and superradiance.

Purpose of the Study:

  • Investigate Dicke subradiance in distant, noninteracting multilevel quantum sources.
  • Explore spatial emission patterns and suppression of spontaneous emission.
  • Extend the concept to thermal light sources.

Main Methods:

  • Theoretical derivation for N≥2 distant quantum sources in antisymmetric states.
  • Analysis of higher-order intensity correlations for thermal light.
  • Experimental measurements for N=2 to 5 distant thermal light sources.

Main Results:

  • Identified 'directional Dicke subradiance' with full emission suppression in specific directions.
  • Demonstrated that thermal light sources exhibit similar subradiant behavior.
  • Corroborated theoretical predictions with experimental findings.

Conclusions:

  • Directional Dicke subradiance is a general interference phenomenon.
  • Applicable to both quantum and thermal light sources.
  • Opens avenues for controlling light emission patterns.