Wigner negativity in the steady-state output of a Kerr parametric oscillator
Quantum Physics
2021-05-17 v2
Abstract
The output field from a continuously driven linear parametric oscillator may exhibit considerably more squeezing than the intracavity field. Inspired by this fact, we explore the nonclassical features of the steady-state output field of a driven nonlinear Kerr parametric oscillator using a temporal wave packet mode description. Utilizing a new numerical method, we have access to the density matrix of arbitrary wave packet modes. Remarkably, we find that even though the steady-state cavity field is always characterized by a positive Wigner function, the output may exhibit Wigner negativity, depending on the properties of the selected mode.
Keywords
Cite
@article{arxiv.2009.08168,
title = {Wigner negativity in the steady-state output of a Kerr parametric oscillator},
author = {Ingrid Strandberg and Göran Johansson and Fernando Quijandría},
journal= {arXiv preprint arXiv:2009.08168},
year = {2021}
}