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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 22874–22881

Ultra-low power, Zeno effect based optical modulation in a degenerate V-system with a tapered nano fiber in atomic vapor

K. Salit, M. Salit, Subramanian Krishnamurthy, Y. Wang, P. Kumar, and M. S. Shahriar  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 22874-22881 (2011)

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We demonstrate an ultra-low light level optical modulator using a tapered nano fiber embedded in a hot rubidium vapor. The control and signal beams are co-propagating but orthogonally polarized, leading to a degenerate V-system involving coherent superpositions of Zeeman sublevels. The modulation is due primarily to the quantum Zeno effect for the signal beam induced by the control beam. For a control power of 40 nW and a signal power of 100 pW, we observe near 100% modulation. The ultra-low power level needed for the modulation is due to a combination of the Zeno effect and the extreme field localization in the evanescent field around the taper.

© 2011 OSA

OCIS Codes
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(250.4110) Optoelectronics : Modulators

ToC Category:
Nonlinear Optics

Original Manuscript: August 15, 2011
Revised Manuscript: September 27, 2011
Manuscript Accepted: October 3, 2011
Published: October 27, 2011

K. Salit, M. Salit, Subramanian Krishnamurthy, Y. Wang, P. Kumar, and M. S. Shahriar, "Ultra-low power, Zeno effect based optical modulation in a degenerate V-system with a tapered nano fiber in atomic vapor," Opt. Express 19, 22874-22881 (2011)

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