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



Runbing Li, Lu Deng, Edward W. Hagley


We demonstrate a fast-responding Kerr phase gate using a room-temperature 85Rb vapor operated in a Raman gain scheme where the probe/signal wave travels “superluminally”. Continuously controllable nonlinear Kerr phase shift of the probe wave from 0 to π radian in comparison with a reference wave have been observed at 333o K (60oC). We show rapid manipulation of digitally encoded probe wave by using a digitally encoded phase control light field, demonstrating the capability of the system for possible application in information science and telecommunications.
Physical Review Letters


Kerr phase gate, fast propagation, Raman gain and amplification


Li, R. , Deng, L. and Hagley, E. (2013), Fast, All-Optical, Zero to PI Continuously Controllable Kerr Phase Gate, Physical Review Letters, [online], (Accessed June 18, 2024)


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Created March 13, 2013, Updated November 10, 2018