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Realization of an all-optical zero to π cross-phase modulation jump

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. doi:10.1103/PhysRevLett.102.013902.

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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.

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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.
Funding AgencyGrant Number
Defense Advanced Research Projects AgencyUNSPECIFIED
Department of DefenseUNSPECIFIED
University of RochesterUNSPECIFIED
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
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Record Number:CaltechAUTHORS:CAMprl09
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12878
Deposited By: Archive Administrator
Deposited On:07 Jan 2009 19:43
Last Modified:08 Nov 2021 22:33

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