Lifting the bandwidth limit of optical homodyne measurement with broadband parametric amplification.

ABSTRACT: Homodyne measurement is a corner-stone method of quantum optics that measures the quadratures of light-the quantum optical analog of the canonical position and momentum. Standard homodyne, however, suffers from a severe bandwidth limitation: while the bandwidth of optical states can span many THz, standard homodyne is inherently limited to the electronically accessible MHz-to-GHz range, leaving a dramatic gap between relevant optical phenomena and the measurement capability. We demonstrate a fully parallel optical homodyne measurement across an arbitrary optical bandwidth, effectively lifting this bandwidth limitation completely. Using optical parametric amplification, which amplifies one quadrature while attenuating the other, we measure quadrature squeezing of 1.7 dB simultaneously acros

SUBMITTER: Shaked Y 

PROVIDER: S-EPMC5807324 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature