Generating Hermite polynomial excited squeezed states by means of conditional measurements on a beam splitter

TL;DR

This paper proposes a method to generate Hermite polynomial excited squeezed vacuum states using conditional measurements on a beam splitter, demonstrating nonclassical effects and non-Gaussianity in the generated states.

Contribution

It introduces a novel scheme for producing non-Gaussian quantum states via conditional measurements on a beam splitter, expanding quantum state engineering techniques.

Findings

Nonclassicality depends on beam splitter control parameters.

Generated states exhibit sub-Poissonian photon statistics.

The scheme effectively produces non-Gaussian states.

Abstract

A scheme for conditional generating a Hermite polynomial excited squeezed vacuum states (HESVS) is proposed. Injecting a two-mode squeezed vacuum state (TMSVS) into a beam splitter (BS) and counting the photons in one of the output channels, the conditional state in the other output channel is just a HESVS. To exhibit a number of nonclassical effects and non-Guassianity, we mainly investigate the photon number distribution, sub-Poissonian distribution, quadrature component distribution, and quasi-probability distribution of the HPESVS. We find that its nonclassicality closely relates to the control parameter of the BS, the squeezed parameter of the TMSVS, and the photon number of conditional measurement. These further demonstrate that performing the conditional measurement on a BS is an effective approach to generate non-Guassian state.