11 February 2011 Large optical nonlinearities with few photons
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Abstract
Weak-light all-optical switches would enhance photonics capabilities and enable important optical quantum information processing tasks, but optical switching based on third-order optical nonlinearity is proving to be elusive and controversial. I discuss strategies to generate large cross-phase modulation by combining double electromagnetically induced transparency, competing atomic transitions, electron population engineering for pulse speed control, and using boundary conditions to confine the transverse field beyond the diffraction limit.
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Barry C. Sanders, "Large optical nonlinearities with few photons", Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 79480I (11 February 2011); doi: 10.1117/12.873653; https://doi.org/10.1117/12.873653
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