Generation of macroscopic superposition states with small nonlinearity

Details Generation of macroscopic superposition states with small nonlinearity Generation of macroscopic superposition states with small nonlinearity

2004-05-09

arxiv.org/abs/quant-ph/0405041v3

Phys. Rev. A 70, 061801(R) (2004)

Physics

Quantum Physics

Significantly improved version, to be published in PRA as a Rapid Communication

Scientific paper

10.1103/PhysRevA.70.061801

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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