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Viewpoint: A Closer Connection Between Entanglement and Nonlocality

Serge Massar, Stefano Pironio

Published May 14, 2012• 0 citations
OpenAlex

Abstract

A generalization of one of the most famous experiments in quantum foundations provides a powerful new unifying concept.

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Whereas entanglement and nonlocality belong to the fundamental findings of quantum theory, possible extensions to macroscopic systems outside the quantum laboratory are scarcely studied. This paper analyses conditions for entanglement to occur on a macrophysical level. An empirical basis is given by historic episodes and modern quantitative data. Theoretical understanding can start from the concept of perspective notions; the crucial new term is "common prearranged context", which characterizes the preparation to be made in advance (or naturally given conditions) in order to enable entanglement. A mathematical formalization is possible and gives some insight about how to handle perspective notions. 1. Entanglement in Quantum Theory and on a Macrophysical Level Entanglement and nonlocality belong to the eminent findings of modern quantum theory, confirmed experimentally beyond any doubt, and also by the functioning of quantum communication. Some years after the famous experiments by Aspect et al., 3 the idea was sketched that EPR correlatedness could be generalized beyond the original domain. 4 Along this line, series of fascinating experiments were performed inside the quantum laboratories. 5
Although entanglement is widely recognized as one of the most fascinating characteristics of quantum mechanics, nonlocality remains to be a big labyrinth. The proof of existence of nonlocality is as yet not much convincing because of its strong reliance on Bell's theorem where the assumption of realism weakens the proof. We demonstrate that entanglement and quantum nonlocality are two equivalent aspects of the same quantum wholeness for spacelike separated quantum systems. This result implies that quantum mechanics is indeed a nonlocal theory and lays foundation of understanding quantum nonlocality beyond Bell's theorem.
This paper presents a new position on the fundamental questions about quantum measurement, consciousness, and soul, which contradicts at least one sacred assumption of every major player in today’s debates. It starts from a first person viewpoint, which may be characterized as Rational German existentialism, in the spirit of Goethe, Von Neumann, Heisenberg, and Raiffa. On that foundation, it rejects the obsolete concepts of primal ontology, supports the quest for a unified objective mathematical model of what underlies all of our experience, and concludes that we should simply not take a rigid position at this time on three possible types of “theory of everything” (1) the “multiverse” theory, according to which, we live in a “multiverse,” an infinite dimensional space like the proposals of Everett, Wheeler, and David Deutsch, or a similar infinite-dimensional realistic theory; (2) hard core Einsteinian theories, assuming a finite dimensional cosmos, which may well be salvageable mathematically in light of new work on quantum measurement, but which would require understanding ourselves as an odd sort of “shadows of Plato’s Cave”; (3) something much weirder, like random graphs, “digital universe” or cosmos as a vast neural network (of what telos?). It rejects the idea that quantum measurement has any connection to the emergent phenomena of consciousness or the soul. Further work building on this foundation rejects the classic formulation of noosphere from De Chardin and Vernadsky, but proposes that an entire species of noospheres permeating our cosmos is plausible under (1) and (2), and may in fact be the most plausible basis for explaining veridical weird experience for those of us who find it inescapable.