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

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

1996-12-02

arxiv.org/abs/quant-ph/9612011v1

Physics

Quantum Physics

6 figures(divided in subfigures) using a4.sty

Scientific paper

10.1103/PhysRevA.55.3184

A scheme for generating Schr\"{o}dinger 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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