Constructing Local Models for General Measurements on Bosonic Gaussian States

Michael G Jabbour, Jonatan Bohr Brask

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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 that 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.
Original languageEnglish
Article number110202
JournalPhysical Review Letters
Issue number11
Number of pages7
Publication statusPublished - 2023


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