Phys. Rev. A 67, 011801(R) (2003) [4 pages]

Light propagation in an atomic medium with steep and sign-reversible dispersion

Abstract

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A. M. Akulshin^1,3, A. Cimmino¹, A. I. Sidorov², P. Hannaford², and G. I. Opat¹
¹School of Physics, The University of Melbourne, Victoria 3010, Australia
²Swinburne University of Technology, Victoria 3122, Australia
³P. N. Lebedev Institute of Physics, Moscow 117924, Russia

Received 11 October 2002; published 17 January 2003

We show that ground-state Zeeman coherence prepared by two-photon Raman transitions in alkali atoms results in steep controllable and sign-reversible dispersion. Pulse propagation with small negative as well as positive group velocity of light (-c/5100 and c/41000) in a Cs vapor cell is reported. Energy exchange between copropagating light components through long-lived Zeeman coherence with enhanced absorption or transmission has been observed.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.67.011801

DOI:

10.1103/PhysRevA.67.011801

PACS:

42.50.Gy, 32.80.Qk, 42.25.Bs

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Phys. Rev. A 67, 011801(R) (2003) [4 pages]

Light propagation in an atomic medium with steep and sign-reversible dispersion