Ravi Kunjwal, Sibasish Ghosh
We show that three unsharp two-valued qubit measurements are enough to violate a noncontextual inequality in a state-dependent manner. We also obtain the optimal quantum violation for this inequality. Besides, we show that no state-independent violation of this inequality is possible. This is a minimal state-dependent proof of measurement contextuality requiring one qubit and three unsharp measurements. We thus provide a novel no-go theorem for generalized-noncontextual models of these measurements.
View original:
http://arxiv.org/abs/1305.7009
No comments:
Post a Comment