Camacho, Ryan M. and Dixon, P. Ben and Glasser, Ryan T. and Jordan, Andrew N. and Howell, John C. (2009) Realization of an all-optical zero to π cross-phase modulation jump. Physical Review Letters, 102 (1). 013902. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:CAMprl09
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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 pi phase shift even for weak interaction strengths. The scheme is experimentally demonstrated using a coherently prepared dark state in a warm atomic cesium vapor.
|Additional Information:||©2009 The American Physical Society. Received 15 May 2008; published 5 January 2009. This work was supported by DARPA DSO Slow Light, a DOD PECASE, and the University of Rochester.|
|Subject Keywords:||PACS: 42.65.-k: Nonlinear optics; 42.50.Gy: Effects of atomic coherence on propagation, absorption, and amplification of light; 42.87.Bg: Optical phase shifting interferometry|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||07 Jan 2009 19:43|
|Last Modified:||26 Dec 2012 10:41|
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