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Quantum Foundations

Multiphoton Bell-type inequality: a tool to unearth nonlocality of continuous variable quantum optical systems

arXiv

Authors: Chandan Kumar, Gaurav Saxena, Arvind

Year

2020

Paper ID

21362

Status

Preprint

Abstract Read

~2 min

Abstract Words

101

Citations

N/A

Abstract

We consider a multiphoton Bell-type inequality to study nonlocality in four-mode continuous variable systems, which goes beyond two-photon states and can be applied to mixed as well as states with fluctuating photon number. We apply the inequality to a wide variety of states such as pure and mixed Gaussian states (including squeezed thermal states) and non-Gaussian states. We consider beam splitters as a model for leakage and show that the inequality is able to detect nonclassicality of noisy Gaussian states as well. Finally, we investigate nonlocality in pair-coherent states and entangled coherent states, which are prominent examples of nonclassical, non-Gaussian states.

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We consider a multiphoton Bell-type inequality to study nonlocality in four-mode continuous variable systems, which goes beyond two-photon states and can be applied to mixed as...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2008.08426 [2] arXiv https://arxiv.org/abs/2008.08426 [3] Publisher https://arxiv.org/abs/2008.08426

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