Optically probing Schwinger angular momenta in a micromechanical resonator
Mesoscale and Nanoscale Physics
2019-11-06 v1 Optics
Abstract
We report an observation of phononic Schwinger angular momenta, which fully represent twomode states in a micromechanical resonator. This observation is based on simultaneous optical detection of the mechanical response at the sum and difference frequency of the two mechanical modes. A post-selection process for the measured signals allows us to extract a component of phononic Schwinger angular momenta. It also enables us to conditionally prepare two-mode squeezed (correlated) states from a randomly excited (uncorrelated) state. The phononic Schwinger angular momenta could be extended to high-dimensional symmetry (e.g. SU(N) group) for studying multipartite correlations in non-equilibrium dynamics with macroscopic objects.
Cite
@article{arxiv.1905.12178,
title = {Optically probing Schwinger angular momenta in a micromechanical resonator},
author = {Motoki Asano and Ryuichi Ohta and Takuma Aihara and Tai Tsuchizawa and Hajime Okamoto and Hiroshi Yamaguchi},
journal= {arXiv preprint arXiv:1905.12178},
year = {2019}
}