Nonclassical Moments and their Measurement
Quantum Physics
2009-11-11 v2
Abstract
Practically applicable criteria for the nonclassicality of quantum states are formulated in terms of different types of moments. For this purpose the moments of the creation and annihilation operators, of two quadratures, and of a quadrature and the photon number operator turn out to be useful. It is shown that all the required moments can be determined by homodyne correlation measurements. An example of a nonclassical effect that is easily characterized by our methods is amplitude-squared squeezing.
Cite
@article{arxiv.quant-ph/0506029,
title = {Nonclassical Moments and their Measurement},
author = {E. V. Shchukin and W. Vogel},
journal= {arXiv preprint arXiv:quant-ph/0506029},
year = {2009}
}
Comments
12 pages, 6 figures