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arXiv · 0709.2011

Highly non-Gaussian states created via cross-Kerr nonlinearity

Tomas Tyc·Natalia Korolkova
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Abstract

We propose a feasible scheme for generation of strongly non-Gaussian states using the cross-Kerr nonlinearity. The resultant states are highly non-classical states of electromagnetic field and exhibit negativity of their Wigner function, sub-Poissonian photon statistics, and amplitude squeezing. Furthermore, the Wigner function has a distinctly pronounced ``banana'' or ``crescent'' shape specific for the Kerr-type interactions, which so far was not demonstrated experimentally. We show that creating and detecting such states should be possible with the present technology using electromagnetically induced transparency in a four-level atomic system in N-configuration.

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Tomas Tyc, Natalia Korolkova. 2007-09-13. Highly non-Gaussian states created via cross-Kerr nonlinearity. https://doi.org/10.1088/1367-2630%2F10%2F2%2F023041

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