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arXiv · 0705.1941

Cross-Kerr interaction in a four-level atomic system

Gary F. Sinclair·Natalia Korolkova
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Abstract

We derive the form of the cross-Kerr interaction in a four-level atomic system in the N-configuration. We use time-independent perturbation theory to calculate the eigenenergies and eigenstates of the Schrodinger equation for the system. The system is considered as a perturbation of a Raman resonant three-level lambda scheme for which exact solutions are known. We show that within the strong control field limit the cross-Kerr interaction can arise between two weak probe fields. The strength of this nonlinear coupling is several orders of magnitude larger than that achievable using optical fibres.

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Gary F. Sinclair, Natalia Korolkova. 2007-07-12. Cross-Kerr interaction in a four-level atomic system. https://doi.org/10.1103/physreva.76.033803

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