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Related Experiment Videos

Atomic memory for correlated photon states.

C H van der Wal1, M D Eisaman, A André

  • 1Department of Physics, Harvard University, Cambridge, MA 02138, USA.

Science (New York, N.Y.)
|May 24, 2003
PubMed
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Researchers controlled the delay between two correlated light pulses using atomic storage in rubidium atoms. This quantum communication technique relies on Raman scattering and coherent conversion for precise timing control.

Area of Science:

  • Quantum optics
  • Atomic physics
  • Nonlinear optics

Background:

  • Quantum entanglement enables secure communication protocols.
  • Controlling the temporal properties of entangled photons is crucial for quantum information processing.

Purpose of the Study:

  • To demonstrate coherent control over the time delay between entangled photon pairs.
  • To explore the use of atomic ensembles for temporal manipulation of quantum states.

Main Methods:

  • Utilizing Raman scattering to generate spin-flipped atom-photon pairs.
  • Employing temporal storage of photonic states in a rubidium atomic ensemble.
  • Coherent conversion of atomic states into a delayed photon beam.

Main Results:

Related Experiment Videos

  • Experimental demonstration of two quantum-mechanically correlated light pulses.
  • Coherent control over the time delay between the pulses via atomic storage.
  • Successful generation of delayed photon beams through resonant nonlinear optical processes.

Conclusions:

  • Atomic ensembles provide a viable platform for temporal control of quantum states.
  • The demonstrated resonant nonlinear optical process shows promise for quantum communication applications.
  • Precise temporal management of entangled photons is achievable using this technique.