Conditional homodyne detection of quadrature squeezing is compared with standard nonconditional detection. Whereas the latter identifies nonclassicality in a quantitative way, as a reduction of the noise power below the shot noise level, conditional detection makes a qualitative distinction between vacuum state squeezing and squeezed classical noise. Implications of this comparison for the realistic interpretation of vacuum fluctuations (stochastic electrodynamics) are discussed.
@article{arxiv.quant-ph/0406102,
title = {Vacuum fluctuations and the conditional homodyne detection of squeezed light},
author = {H J Carmichael and Hyunchul Nha},
journal= {arXiv preprint arXiv:quant-ph/0406102},
year = {2009}
}
Comments
14 pages, 7 figures, to appear in J. Opt. B: Quantum Semiclass. Opt