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Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
Electromagnetically induced transparency and light storage in an atomic Mott insulator.
U Schnorrberger1, J D Thompson, S Trotzky
1Johannes Gutenberg-Universität, Institut für Physik, Staudingerweg 7, 55128 Mainz, Germany.
Physical Review Letters
|August 8, 2009
Summary
Researchers achieved record light storage times of 240 ms using ultracold Rubidium-87 atoms in an optical lattice. This breakthrough enables controlled redirection of stored light pulses, advancing quantum information science.
Area of Science:
- Quantum Optics
- Atomic Physics
- Condensed Matter Physics
Background:
- Electromagnetically induced transparency (EIT) enables light storage in atomic systems.
- Ultracold atoms in optical lattices provide a controllable platform for quantum phenomena.
Purpose of the Study:
- To demonstrate electromagnetically induced transparency and light storage in ultracold Rubidium-87 atoms.
- To achieve and measure long light storage times.
- To control the spatial properties of the retrieved light pulse.
Main Methods:
- Utilizing ultracold Rubidium-87 atoms in a Mott insulating state within a 3D optical lattice.
- Employing electromagnetically induced transparency for light storage.
- Imprinting a phase gradient using a spatially inhomogeneous light field.
Main Results:
- Achieved light storage times of approximately 240 ms, the longest reported for ultracold atomic samples.
- Demonstrated controlled angular redirection of the retrieved light pulse.
- Successfully implemented light storage and retrieval in a Mott insulator atomic system.
Conclusions:
- Ultracold atoms in optical lattices are a promising system for long-duration quantum memories.
- Spatially controlled light-matter interactions can be used to manipulate stored quantum information.
- This work advances the development of quantum repeaters and quantum information processing.
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