Nonlinear optics using cold Rydberg atoms

Pritchard, Jonathan D. and Weatherill, Kevin J. and Adams, Charles S. (2013) Nonlinear optics using cold Rydberg atoms. In: Annual Review of Cold Atoms and Molecules. World Scientific, Singapore, pp. 301-350. ISBN 9789814440394

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The implementation of electromagnetically induced transparency (EIT) in a cold Rydberg gas provides an attractive route towards strong photon--photon interactions and fully deterministic all-optical quantum information processing. In this brief review we discuss the underlying principles of how large single photon non-linearities are achieved in this system and describe experimental progress to date.