Abstract
We show that the state-independent violation of inequalities for noncontextual hidden variable theories introduced in [Phys. Rev. Lett. 101, 210401 (2008)] is universal, i.e., occurs for any quantum mechanical system in which noncontextuality is meaningful. We describe a method to obtain state-independent violations for any system of dimension . This universality proves that, according to quantum mechanics, there are no “classical” states.
- Received 20 October 2008
DOI:https://doi.org/10.1103/PhysRevLett.103.050401
©2009 American Physical Society