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Generation of macroscopic superposition states with small nonlinearity

H. Jeong·M. S. Kim·T. C. Ralph·B. S. Ham
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Abstract

We suggest a scheme to generate a macroscopic superposition state (Schrodinger cat state) of a free-propagating optical field using a beam splitter, homodyne measurement and a very small Kerr nonlinear effect. Our scheme makes it possible to considerably reduce the required nonlinear effect to generate an optical cat state using simple and efficient optical elements.

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H. Jeong, M. S. Kim, T. C. Ralph, B. S. Ham. 2004-10-18. Generation of macroscopic superposition states with small nonlinearity. https://doi.org/10.1103/physreva.70.061801

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