Open AccessPhase-sensitive amplification via multi-phase-matched four-wave mixing
Author(s) -
Erin M. Knutson,
J. Sam Cross,
Sara Wyllie,
Ryan T. Glasser
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.396234
Subject(s) - optics , four wave mixing , phase (matter) , phase noise , amplifier , physics , sensitivity (control systems) , mixing (physics) , optical amplifier , noise (video) , nonlinear optics , phase conjugation , quantum noise , laser , optoelectronics , electronic engineering , cmos , quantum mechanics , artificial intelligence , computer science , image (mathematics) , quantum , engineering
Phase-sensitive nonlinear gain processes have been implemented as noise-reduced optical amplifiers, which have the potential to achieve signal-to-noise ratios beyond the classical limit. We experimentally demonstrate a novel phase-sensitive four-wave mixing amplification process in a single atomic vapor cell with only two input frequencies and two input vacuum modes. The amount of phase sensitivity depends on the power ratio between the inserted probes as well as on the input frequency of the probes. We find that, for certain phase values, the intensity noise of an output mode is lower than that of its phase-insensitive counterpart.