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Collective super- and subradiant dynamics between distant optical quantum emitters.

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Researchers achieved long-distance quantum emitter coupling in nanophotonic waveguides. This breakthrough enables control over super- and subradiant emission for scalable quantum information processing.

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Area of Science:

  • Quantum optics
  • Nanophotonics
  • Solid-state quantum emitters

Background:

  • Photon emission is key to light-matter interaction and quantum technologies.
  • Controlling multiple quantum emitters is crucial but challenging due to short-range coupling.

Purpose of the Study:

  • To achieve and study distant dipole-dipole radiative coupling between quantum emitters.
  • To explore methods for controlling collective emission dynamics.

Main Methods:

  • Embedding pairs of solid-state optical quantum emitters in a nanophotonic waveguide.
  • Dynamically probing the collective radiative response.

Main Results:

  • Demonstrated distant dipole-dipole radiative coupling.
  • Observed and controlled superradiant and subradiant emission.
  • Identified excitation techniques to manage emission dynamics.

Conclusions:

  • This work is a foundational step for scalable quantum information processing.
  • Enables multiemitter applications by overcoming coupling distance limitations.