Generating Schrödinger-cat-like states by means of conditional measurements on a beam splitter

M. Dakna, T. Anhut, T. Opatrný, L. Knöll, and D.-G. Welsch
Phys. Rev. A 55, 3184 – Published 1 April 1997
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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 a squeezed vacuum into a beam splitter 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.

    DOI:https://doi.org/10.1103/PhysRevA.55.3184

    ©1997 American Physical Society

    Authors & Affiliations

    M. Dakna, T. Anhut, T. Opatrný, L. Knöll, and D.-G. Welsch

    • Friedrich-Schiller-Universität Jena, Theoretisch-Physikalisches Institut, Max-Wien-Platz 1, D-07743 Jena, Germany

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    Issue

    Vol. 55, Iss. 4 — April 1997

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