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arXiv · 2210.05474

Constructing local models for general measurements on bosonic Gaussian states

Michael G. Jabbour·Jonatan Bohr Brask
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Abstract

We derive a simple sufficient criterion for the locality of correlations obtained from given measurements on a Gaussian quantum state. The criterion is based on the construction of a local-hidden-variable model which works by passing part of the inherent Gaussian noise of the state onto the measurements. We illustrate our result in the setting of displaced photodetection on a two-mode squeezed state. Here, our criterion exhibits the existence of a local-hidden-variable model for a range of parameters where the state is still entangled.

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Michael G. Jabbour, Jonatan Bohr Brask. 2022-10-11. Constructing local models for general measurements on bosonic Gaussian states. https://doi.org/10.1103/physrevlett.131.110202

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