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Originally published in Science Express on 22 May 2003
Science 11 July 2003:
Vol. 301. no. 5630, pp. 196 - 200
DOI: 10.1126/science.1085946
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Reports

Atomic Memory for Correlated Photon States

C. H. van der Wal,1 M. D. Eisaman,1 A. André,1 R. L. Walsworth,2 D. F. Phillips,2 A. S. Zibrov,1,2,3 M. D. Lukin1*

We experimentally demonstrate emission of two quantum-mechanically correlated light pulses with a time delay that is coherently controlled via temporal storage of photonic states in an ensemble of rubidium atoms. The experiment is based on Raman scattering, which produces correlated pairs of spin-flipped atoms and photons, followed by coherent conversion of the atomic states into a different photon beam after a controllable delay. This resonant nonlinear optical process is a promising technique for potential applications in quantum communication.

1 Department of Physics, Harvard University, Cambridge, MA 02138, USA. 2 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA. 3 P. N. Lebedev Institute of Physics, Moscow 117924, Russia.



Note added in proof: We have been made aware of related work recently published by Kuzmich et al. (39).

* To whom correspondence should be addressed. E-mail: lukin{at}physics.harvard.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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All-Optical Switching in Rubidium Vapor.
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Quantum State Transfer Between Matter and Light.
D. N. Matsukevich and A. Kuzmich (2004)
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