Highly non-Gaussian states created via cross-Kerr nonlinearity

Warning

This publication doesn't include Institute of Computer Science. It includes Faculty of Science. Official publication website can be found on muni.cz.

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