Experimental evidence for bounds on quantum correlations.
We implemented the experiment proposed by Cabello in the preceding Letter to test the bounds of quantum correlation. As expected from the theory we found that, for certain choices of local observables, Tsirelson's bound of the Clauser-Horne-Shimony-Holt inequality (2 x square root of 2) is not reached by any quantum states.
Elsag spa, Via Puccini 2-16154 Genoa, Italy. fabio.bovino@elsag.it
F A
FA
Bovino
G
G
Castagnoli
I P
IP
Degiovanni
S
S
Castelletto