Improved measurement of two-mode quantum correlations using a phase-sensitive amplifier
Optics
2017-08-29 v1
Abstract
We demonstrate the ability of a phase-sensitive amplifier (PSA) to pre-amplify a selected quadrature of one mode of a two-mode squeezed state in order to improve the measurement of two-mode quantum correlations that exist before degradation due to optical and detection losses. We use four-wave mixing (4WM) in Rb vapor to generate bright beams in a two-mode squeezed state. One of these two modes then passes through a second 4WM interaction in a PSA configuration to noiselessly pre-amplify the desired quadrature of the mode before loss is intentionally introduced. We demonstrate an enhancement in the measured degree of intensity correlation and intensity-difference squeezing between the two modes.
Cite
@article{arxiv.1708.08334,
title = {Improved measurement of two-mode quantum correlations using a phase-sensitive amplifier},
author = {Tian Li and Brian E. Anderson and Travis Horrom and Bonnie L. Schmittberger and Kevin M. Jones and Paul D. Lett},
journal= {arXiv preprint arXiv:1708.08334},
year = {2017}
}
Comments
11 pages, 5 figures