Highly non-Gaussian states created via cross-Kerr nonlinearity

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Authors	TYC Tomáš KOROLKOVA Natalia
Year of publication	2008
Type	Article in Periodical
Magazine / Source	New Journal of Physics
MU Faculty or unit	Faculty of Science
Citation
Web	http://stacks.iop.org/1367-2630/10/023041
Field	Theoretical physics
Keywords	non-Gaussian states; Kerr nonlinearity; feedforward;
Description	We propose a feasible scheme for generation of strongly non-Gaussian states using the cross-Kerr nonlinearity. The resultant states are highly non-classical and exhibit negativity of their Wigner function, sub-Poissonian photon statistics and photon number squeezing. 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.
Related projects:	Highly Parallel and Distributed Computing Systems Mathematical structures and their physical applications Quantum multipartite computation, communication and security