Cross-Kerr interaction in a four-level atomic system
Quantum Physics
2009-11-13 v2
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.
Cite
@article{arxiv.0705.1941,
title = {Cross-Kerr interaction in a four-level atomic system},
author = {Gary F. Sinclair and Natalia Korolkova},
journal= {arXiv preprint arXiv:0705.1941},
year = {2009}
}