All tight correlation Bell inequalities have quantum violations

It is by now well established that there exist nonlocal games for which the best entanglement-assisted performance is not better than the best classical performance. Here we show in contrast that any two-player XOR game, for which the corresponding Bell inequality is tight, has a quantum advantage....

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Dettagli Bibliografici
Autori principali: Llorenç Escolà, John Calsamiglia, Andreas Winter
Natura: Articolo
Lingua:English
Pubblicazione: American Physical Society 2020-02-01
Serie:Physical Review Research
Accesso online:http://doi.org/10.1103/PhysRevResearch.2.012044