  We propose a scheme for measurements of anomalous moments of creation and
annihilation operators requiring only one beam splitter, only one photodetector
and not many measurements with phase-shift $\varphi$ in homodyning. This has
advantageous over scheme of Shchukin and Vogel [Phys. Rev. A 72, 043808 (2005)]
which requires many photodetectors, many beam splitters and a large number of
measurements with phase-shift $\varphi$ as a Fourier transform is calculated
integrating over $\varphi$.
