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Phys. Rev. A 75, 011401(R) (2007) [4 pages]

Mapping broadband single-photon wave packets into an atomic memory

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J. Nunn1,*, I. A. Walmsley1, M. G. Raymer2, K. Surmacz1, F. C. Waldermann1, Z. Wang1, and D. Jaksch1
1Clarendon Laboratory, Oxford University, Parks Road, Oxford OX1 3PU, United Kingdom
2Oregon Center for Optics and Department of Physics, University of Oregon, Eugene, Oregon 97403, USA

Received 21 April 2006; published 22 January 2007

We analyze a quantum optical memory based on the off-resonant Raman interaction of a single broadband photon, copropagating with a classical control pulse, with an atomic ensemble. The conditions under which the memory can perform optimally are found, by means of a universal mode decomposition. This enables the memory efficiency to be specified in terms of a single parameter, and the control field pulse shape to be determined via a simple nonlinear scaling. We apply the same decomposition to determine the optimal configurations for read-out.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.011401
DOI:
10.1103/PhysRevA.75.011401
PACS:
42.50.−p, 03.67.Dd, 03.67.Hk, 03.67.Lx

*Electronic mail: j.nunn1@physics.ox.ac.uk

 
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