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Phys. Rev. A 66, 023801 (2002) [4 pages]

Limitations of light delay and storage times in electromagnetically induced transparency experiments with condensates

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D. C. Roberts, T. Gasenzer, and K. Burnett
Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom

Received 16 January 2002; published 2 August 2002

We investigate the limitations arising from atomic collisions on the storage and delay times of probe pulses in electromagnetically induced transparency experiments. We find that the atomic collisions can be described by an effective decay rate that limits storage and delay times. We calculate the momentum and temperature dependence of the decay rate and find that it is necessary to excite atoms at a particular momentum depending on temperature and spacing of the energy levels involved in order to minimize the decoherence effects of atomic collisions.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.023801
DOI:
10.1103/PhysRevA.66.023801
PACS:
42.50.Gy, 03.75.Fi, 03.67.-a