Is the Contextuality Loophole Fatal for the Derivation of Bell Inequalities?
نویسنده
چکیده
It is explained on a physical basis how absence of contextuality allows Bell inequalities to be violated, without bringing an implication on locality or realism. Hereto we connect first to the local realistic theory Stochastic Electrodynamics, and then put the argument more broadly. Thus even if Bell Inequality Violation is demonstrated beyond reasonable doubt, it will have no say on local realism, because absence of contextuality prevents the Bell inequalities to be derived from local realistic models.
منابع مشابه
Violation of Bell inequalities for beables
Violation of Bell inequalities for beables is well-known to be possible because of what has become known as the “conspiracy” loophole, but this route to a beables model is properly discounted as implausible, essentially because it requires correlations between instrument settings and hidden beables. This paper identifies a further loophole, called here the “correlation” loophole, which is more ...
متن کاملLogical Bell Inequalities
Bell inequalities play a central rôle in the study of quantum non-locality and entanglement, with many applications in quantum information. Despite the huge literature on Bell inequalities, it is not easy to find a clear conceptual answer to what a Bell inequality is, or a clear guiding principle as to how they may be derived. In this paper, we introduce a notion of logical Bell inequality whic...
متن کاملProbabilistic Contextuality in EPR/Bohm-type Systems with Signaling Allowed
We propose a principled way of defining and measuring contextuality in systems with deterministic inputs and random outputs. We illustrate it on systems with two binary inputs and two binary random outputs, the prominent example being the system of two entangled spin-half particles with each particle’s spins (random outputs) being measured along one of two directions (inputs). It is traditional...
متن کاملProposal for a Loophole-Free Bell Test with Electron Spins of Donors in Silicon
So far, all experimental tests of Bell inequalities which must be satisfied by all local realistic hidden-variable theories and are violated by quantum mechanical predictions have left at least one loophole open. We propose a feasible setup allowing for a loophole-free test of the Bell inequalities. Two electron spin qubits of donorsP in a nanoscale silicon host in different cavities 300 m apar...
متن کاملStronger quantum correlations with loophole-free postselection.
One of the most striking nonclassical features of quantum mechanics is in the correlations it predicts between spatially separated measurements. In local hidden variable theories, correlations are constrained by Bell inequalities, but quantum correlations violate these. However, experimental imperfections lead to loopholes whereby LHV correlations are no longer constrained by Bell inequalities,...
متن کامل