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Related Experiment Video

Updated: May 13, 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

Phase-locked indistinguishable photons with synthesized waveforms from a solid-state source.

Clemens Matthiesen1, Martin Geller, Carsten H H Schulte

  • 1Cavendish Laboratory, University of Cambridge, Cambridge, UK.

Nature Communications
|March 21, 2013
PubMed
Summary
This summary is machine-generated.

Researchers generated highly coherent single photons from quantum dots, exceeding 3 seconds. This breakthrough enables precise waveform control and creates indistinguishable photons for advanced quantum applications.

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Related Experiment Videos

Last Updated: May 13, 2026

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09:23

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Published on: May 30, 2014

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Area of Science:

  • Quantum optics
  • Solid-state physics
  • Nanophotonics

Background:

  • Resonance fluorescence offers single photons beyond Fourier limits.
  • Solid-state systems face environment-induced dephasing challenges.

Purpose of the Study:

  • Demonstrate long-lived coherence of single photons from quantum dots.
  • Develop a method for synthesizing coherent photon waveforms.
  • Investigate indistinguishability of coherently generated photons.

Main Methods:

  • Utilized self-assembled Indium Arsenide (InAs) quantum dots.
  • Employed resonance fluorescence in the Heitler regime.
  • Shaped the excitation laser field to control photon waveforms.

Main Results:

  • Achieved mutual coherence between single photons and excitation laser > 3 seconds.
  • Synthesized near-arbitrary coherent photon waveforms without photon loss.
  • Demonstrated fundamental indistinguishability of separately generated coherent photons.

Conclusions:

  • Coherent photon waveform synthesis circumvents dephasing and photon loss.
  • Indistinguishable photons pave the way for distant quantum entanglement.