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Schroedinger cat-like states by conditional measurements on a beam-splitter

M. Dakna·T. Anhut·T. Opartny·L. Knoll·D. -G. Welsch
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Abstract

A scheme for generating Schrödinger cat-like states of a single-mode optical field by means of conditional measurement is proposed. Feeding into a beam splitter a squeezed vacuum and counting the photons in one of the output channels, the conditional states in the other output channel exhibit a number of properties that are very similar to those of superpositions of two coherent states with opposite phases. We present analytical and numerical results for the photon-number and quadrature-component distributions of the conditional states and their Wigner and Husimi functions. Further, we discuss the effect of realistic photocounting on the states.

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M. Dakna, T. Anhut, T. Opartny, L. Knoll, D. -G. Welsch. 1996-12-02. Schroedinger cat-like states by conditional measurements on a beam-splitter. https://doi.org/10.1103/physreva.55.3184

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