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Related Experiment Videos

A photon turnstile dynamically regulated by one atom.

Barak Dayan1, A S Parkins, Takao Aoki

  • 1Norman Bridge Laboratory of Physics, 12-33, California Institute of Technology, Pasadena, CA 91125, USA.

Science (New York, N.Y.)
|February 23, 2008
PubMed
Summary
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Researchers demonstrated a "photon turnstile" using a single atom in an optical resonator. This system enables controlled, one-by-one transport of photons, crucial for quantum information science and scalable quantum processing.

Area of Science:

  • Quantum optics
  • Strong atom-photon interactions

Background:

  • Traditional nonlinear optics involves many atoms and photons.
  • New phenomena emerge in the quantum regime with strong single atom-photon interactions.

Purpose of the Study:

  • To achieve strong interactions between single atoms and photons.
  • To demonstrate a mechanism for regulated, one-by-one photon transport.

Main Methods:

  • Utilizing a microscopic optical resonator.
  • Employing critical coupling of input light.
  • Photon counting measurements of input and output fields.

Main Results:

  • Demonstrated a robust and efficient mechanism for controlled single-photon transport.

Related Experiment Videos

  • Single atom in the resonator acts as a photon turnstile, controlling output based on input photon number.
  • Verified transformation from Poissonian to sub-Poissonian photon stream.

    • Conclusions:

    • Achieved a quantum regime of strong atom-photon interactions.
    • Developed a functional photon turnstile for precise photon control.
    • Results are applicable to quantum information science and scalable quantum processing.