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Open Quantum Systems Decoherence

Wigner negativity in the steady-state output of a Kerr parametric oscillator

arXiv
Authors: Ingrid Strandberg, Göran Johansson, Fernando Quijandría

Year

2020

Paper ID

20636

Status

Preprint

Abstract Read

~2 min

Abstract Words

96

Citations

N/A

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.

Why This Paper Matters

  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
  • It adds a 2020 reference point for readers tracking recent quantum research.
  • The output field from a continuously driven linear parametric oscillator may exhibit considerably more squeezing than the intracavity field.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2009.08168 [2] arXiv https://arxiv.org/abs/2009.08168 [3] Publisher https://arxiv.org/abs/2009.08168

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