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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 10 — May. 15, 2007
  • pp: 1317–1319

All-optical switching at ultralow light levels

Jiepeng Zhang, Gessler Hernandez, and Yifu Zhu  »View Author Affiliations


Optics Letters, Vol. 32, Issue 10, pp. 1317-1319 (2007)
http://dx.doi.org/10.1364/OL.32.001317


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Abstract

We report an experimental demonstration of all-optical switching at ultralow light levels in coherently prepared Rb atoms. A signal light pulse is switched on and off by a control light pulse at different frequencies in a four-level atomic system based on multiphoton interferences. We observed a switching efficiency of 55% with the signal and control light pulses containing 20 photons each, corresponding to a control energy density of 10 5 photons per atomic cross section λ 2 ( 2 π ) .

© 2007 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(190.4180) Nonlinear optics : Multiphoton processes
(270.1670) Quantum optics : Coherent optical effects
(270.4180) Quantum optics : Multiphoton processes
(270.5530) Quantum optics : Pulse propagation and temporal solitons

ToC Category:
Quantum Optics

History
Original Manuscript: November 28, 2006
Revised Manuscript: February 7, 2007
Manuscript Accepted: February 8, 2007
Published: April 17, 2007

Citation
Jiepeng Zhang, Gessler Hernandez, and Yifu Zhu, "All-optical switching at ultralow light levels," Opt. Lett. 32, 1317-1319 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-10-1317


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