Two-qutrit Werner state is always local

Abstract:In our paper, we show that a two-qutrit Werner state admits a local hidden-variable model for all values of the parameter in a scenario involving two projective measurements per site, with three outcomes per measurement. To this end, we derive a simple sufficient condition under which a two-qutrit state satisfies the Collins-Gisin-Linden-Massar-Popescu inequality for arbitrary choices of Alice's and Bob's observables, and show that the Werner state always satisfies this condition. Next, we use the fact that any two-qutrit state satisfying the Collins-Gisin-Linden-Massar-Popescu inequality for arbitrary choices of Alice's and Bob's observables admits a local hidden variable model.

arXiv:2610.02997 [quant-ph]

(or arXiv:2610.02997v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2610.02997 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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