Influence of modal loss on the quantum state generation via cross-Kerr nonlinearity

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Authors	MOGILEVTSEV Dmitri TYC Tomáš KOROLKOVA Natalia
Year of publication	2009
Type	Article in Periodical
Magazine / Source	Physical Review A
MU Faculty or unit	Faculty of Science
Citation
Web	http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000079000005053832000001&idtype=cvips&gifs=yes
Field	Theoretical physics
Keywords	Kerr nonlinearity; losses; master equation
Description	In this paper we investigate the influence of decoherence effects on quantum states generated as a result of the cross-Kerr nonlinear interaction between two modes. For Markovian losses both photon loss and dephasing, a region of parameters when losses still do not lead to destruction of nonclassicality is identified. We emphasize the difference in impact of losses in the process of state generation as opposed to those occurring in propagation channel. We show, moreover, that correlated losses in modern realizations of schemes of large cross-Kerr nonlinearity might lead to enhancement of nonclassicality.
Related projects:	Highly Parallel and Distributed Computing Systems Mathematical structures and their physical applications