Vacuum fluctuations and the conditional homodyne detection of squeezed light
arXiv:quant-ph/0406102 · doi:10.1088/1464-4266/6/8/004
Abstract
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.
14 pages, 7 figures, to appear in J. Opt. B: Quantum Semiclass. Opt