Abstract
Using an ultraslow light-based double-Λ-type configuration we demonstrate atomic coherence swing between two different frequencies in a nondegenerate four-wave mixing scheme. A short control pulse applied to the middle of an ultraslow light envelope results in coherence conversion between two ground states, causing both coherence depletion and recovery, resulting in a temporal hole and amplification in the ultraslow light envelope. This outcome holds potential for temporally and spatially localized coherence control of ultraslow light in such applications as a selective photon trap.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
B. S. Ham and J. Hahn
Opt. Lett. 33(23) 2880-2882 (2008)
Byoung S. Ham and Joonsung Hahn
Opt. Express 17(11) 9369-9375 (2009)
A. Eilam, A. D. Wilson-Gordon, and H. Friedmann
Opt. Lett. 33(14) 1605-1607 (2008)