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Phys. Rev. A 65, 053802 (2002) [17 pages]

Resonant and off-resonant transients in electromagnetically induced transparency: Turn-on and turn-off dynamics

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Andrew D. Greentree1, T. B. Smith1, S. R. de Echaniz1, A. V. Durrant1, J. P. Marangos2, D. M. Segal2, and J. A. Vaccaro3
1Quantum Processes Group, Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
2Quantum Optics and Laser Science Group, Blackett Laboratory, Imperial College of Science Technology and Medicine, Prince Consort Road, London SW7 2BW, United Kingdom
3Department of Physics and Astronomy, University of Hertfordshire, College Lane, Hatfield AL10 9AB, United Kingdom

Received 13 September 2001; published 15 April 2002

This paper presents a wide-ranging theoretical and experimental study of nonadiabatic transient phenomena in a Λ electromagnetically induced transparency system when a strong coupling field is rapidly switched on or off. The theoretical treatment uses a Laplace transform approach to solve the time-dependent density matrix equation. The experiments are carried out in a 87Rb magneto-optical trap. The results show transient probe gain in parameter regions not previously studied, and provide insight into the transition dynamics between bare and dressed states.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.053802
DOI:
10.1103/PhysRevA.65.053802
PACS:
42.50.Gy, 42.50.Md, 42.50.Hz, 32.80.Pj
 
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