Realization of an All-Optical Zero to π Cross-Phase Modulation Jump

Ryan M. Camacho, P. Ben Dixon, Ryan T. Glasser, Andrew N. Jordan, and John C. Howell
Phys. Rev. Lett. 102, 013902 – Published 5 January 2009

Abstract

We report on the experimental demonstration of an all-optical π cross-phase modulation jump. By performing a preselection, an optically induced unitary transformation, and then a postselection on the polarization degree of freedom, the phase of the output beam acquires either a zero or π phase shift (with no other possible values). The postselection results in optical loss in the output beam. An input state may be chosen near the resulting phase singularity, yielding a π phase shift even for weak interaction strengths. The scheme is experimentally demonstrated using a coherently prepared dark state in a warm atomic cesium vapor.

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  • Received 15 May 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.013902

©2009 American Physical Society

Authors & Affiliations

Ryan M. Camacho1,2,*, P. Ben Dixon1, Ryan T. Glasser3, Andrew N. Jordan1, and John C. Howell1

  • 1Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA
  • 2The Thomas J. Watson, Sr. Laboratories of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA
  • 3Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA

  • *camacho@caltech.edu

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Issue

Vol. 102, Iss. 1 — 9 January 2009

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