Numerical study of Wigner negativity in one-dimensional steady-state resonance fluorescence
Quantum Physics
2019-12-06 v1
Abstract
In a numerical study, we investigate the steady-state generation of nonclassical states of light from a coherently driven two-level atom in a one-dimensional waveguide. Specifically, we look for states with a negative Wigner function, since such nonclassical states are a resource for quantum information processing applications, including quantum computing. We find that a waveguide terminated by a mirror at the position of the atom can provide Wigner-negative states, while an infinite waveguide yields strictly positive Wigner functions. Moreover, our investigation reveals a connection between the purity of a quantum state and its Wigner negativity. We also analyze the effects of decoherence on the negativity of a state.
Keywords
Cite
@article{arxiv.1909.02395,
title = {Numerical study of Wigner negativity in one-dimensional steady-state resonance fluorescence},
author = {Ingrid Strandberg and Yong Lu and Fernando Quijandría and Göran Johansson},
journal= {arXiv preprint arXiv:1909.02395},
year = {2019}
}