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Low-light-level nonlinear optics with slow light

Danielle A. Braje·Vlatko Balic·G. Y. Yin·S. E. Harris
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Abstract

Electromagnetically induced transparency in an optically thick, cold medium creates a unique system where pulse-propagation velocities may be orders of magnitude less than $c$ and optical nonlinearities become exceedingly large. As a result, nonlinear processes may be efficient at low-light levels. Using an atomic system with three, independent channels, we demonstrate a quantum interference switch where a laser pulse with an energy density of $\sim23$ photons per $λ^2/(2π)$ causes a 1/e absorption of a second pulse.

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Danielle A. Braje, Vlatko Balic, G. Y. Yin, S. E. Harris. 2003-09-10. Low-light-level nonlinear optics with slow light. https://doi.org/10.1103/physreva.68.041801

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