Article Dans Une Revue Physical Review Letters Année : 2023

Constructing Local Models for General Measurements on Bosonic Gaussian States

Résumé

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 localhidden-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.

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hal-05022353 , version 1 (06-04-2025)

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Michael G Jabbour, Jonatan Bohr Brask. Constructing Local Models for General Measurements on Bosonic Gaussian States. Physical Review Letters, 2023, 131 (11), pp.110202. ⟨10.1103/PhysRevLett.131.110202⟩. ⟨hal-05022353⟩
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