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Boson Sampling with Single-Photon Fock States from a Bright Solid-State Source.

J C Loredo1, M A Broome2, P Hilaire3,4

  • 1Centre for Engineered Quantum Systems, Centre for Quantum Computation and Communication Technology, School of Mathematics and Physics, University of Queensland, Brisbane, Queensland 4072, Australia.

Physical Review Letters
|April 15, 2017
PubMed
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This summary is machine-generated.

Researchers demonstrate boson sampling using a bright, solid-state single-photon source. This efficient quantum technology achieves high purity, enabling faster experiments than previous methods.

Area of Science:

  • Quantum Information Science
  • Quantum Optics
  • Solid-State Physics

Background:

  • Boson sampling is a quantum computation task.
  • Previous photonic implementations used inefficient sources.
  • Achieving single-photon input for boson sampling has been a challenge.

Purpose of the Study:

  • To report on a boson-sampling device using a novel bright solid-state single-photon source.
  • To demonstrate high single-photon purity in the source.
  • To improve the efficiency of boson-sampling experiments.

Main Methods:

  • Utilizing a quantum dot-micropillar system for efficient single-photon generation.
  • Demultiplexing emission into three partially indistinguishable single photons.
  • Interfering photons in a linear optics network to perform boson sampling.

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Main Results:

  • Achieved a single-photon purity of 1-g(2)(0) = 0.990±0.001.
  • The solid-state source is 1-2 orders of magnitude more efficient than heralded sources.
  • Enabled faster completion of the boson-sampling experiment.

Conclusions:

  • Demonstrated the first boson-sampling experiment with a bright, high-purity solid-state single-photon source.
  • The efficient and deterministic nature of the source overcomes previous limitations.
  • This work paves the way for more practical quantum computation and simulation.