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Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

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Published on: November 11, 2013

Quantum memory with optically trapped atoms.

Chih-Sung Chuu1, Thorsten Strassel, Bo Zhao

  • 1Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany. chuu@physi.uni-heidelberg.de

Physical Review Letters
|October 15, 2008
PubMed
Summary
This summary is machine-generated.

We demonstrated a quantum memory for collective atomic states using a dipole trap. This quantum memory stores atomic states for up to 60 microseconds, showing nonclassical correlations.

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Area of Science:

  • Quantum physics
  • Atomic physics
  • Quantum optics

Background:

  • Quantum memory is crucial for quantum information processing.
  • Storing collective atomic states in optical traps is a promising approach.

Purpose of the Study:

  • To experimentally demonstrate quantum memory for collective atomic states.
  • To investigate storage times and coherence in a far-detuned optical dipole trap.

Main Methods:

  • Generating collective atomic states heralded by Raman scattered photons.
  • Storing atomic states in an ensemble within an optical dipole trap.
  • Probing storage via photon pair cross-correlation and atomic state retrieval.

Main Results:

  • Successful storage of collective atomic states demonstrated.
  • Atomic coherence maintained within the optical dipole trap.
  • Nonclassical correlations observed for storage times up to 60 microseconds.

Conclusions:

  • Experimental validation of quantum memory for collective atomic states.
  • Optical dipole traps are suitable for quantum storage, preserving coherence.
  • The demonstrated system shows potential for quantum information applications.