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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 6 — Mar. 15, 2009
  • pp: 776–778

Atomic coherence swing in a double-Λ-type system using ultraslow light

Byoung S. Ham and Joonsung Hahn  »View Author Affiliations

Optics Letters, Vol. 34, Issue 6, pp. 776-778 (2009)

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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

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Nonlinear Optics

Original Manuscript: December 3, 2008
Revised Manuscript: January 30, 2009
Manuscript Accepted: February 1, 2009
Published: March 9, 2009

Byoung S. Ham and Joonsung Hahn, "Atomic coherence swing in a double-Λ-type system using ultraslow light," Opt. Lett. 34, 776-778 (2009)

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