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Fast, All-Optical, Zero to π Continuously Controllable Kerr Phase Gate

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Abstract

We demonstrate a fast Kerr phase gate in a room-temperature 85Rb vapor using a Raman gain method where the probe wave travels “superluminally”. Continuously variable, zero to π radian nonlinear Kerr phase shifts of the probe wave relative to a reference wave have been observed at 333 K. We show rapid manipulation of digitally encoded probe waves using a digitally encoded phase-control light field, demonstrating the capability of the system in information science and telecommunication applications.

© 2013 Optical Society of America

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