  We demonstrate the coherent transduction of quantum noise reduction, or
squeezed light, by Ag localized surface plasmons (LSPs). Squeezed light,
generated through four-wave-mixing in Rb vapor, is coupled to a Ag nanohole
array designed to exhibit LSP-mediated extraordinary-optical transmission (EOT)
spectrally coincident with the squeezed light source at 795 nm. We demonstrate
that quantum noise reduction as a function of transmission is found to match
closely with linear attenuation models, thus demonstrating that the
photon-LSP-photon transduction process is coherent near the LSP resonance.
