We show analytically and numerically that a double-Λ system, characterized by parametric amplification of cross-coupled probe and four-wave mixing pulses, is an excellent medium for producing both slow and stored light. Moreover, this system can compensate for the absorption and broadening processes that usually occur without destroying the coherent properties of the medium. The stored probe signal pulse is written by means of a simple Λ system and is retrieved and amplified, at the same frequency, by a double-Λ system that also produces a pulse at the four-wave mixing frequency.
© 2008 Optical Society of America
Original Manuscript: March 10, 2008
Revised Manuscript: June 5, 2008
Manuscript Accepted: June 9, 2008
Published: July 14, 2008
A. Eilam, A. D. Wilson-Gordon, and H. Friedmann, "Slow and stored light in an amplifying double-Λ system," Opt. Lett. 33, 1605-1607 (2008)