Role of Measurement Incompatibility and Uncertainty in Determining Nonlocality
نویسندگان
چکیده
It has been recently shown that measurement incompatibility and fine grained uncertainty—a particular form of preparation uncertainty relation—are deeply related to the nonlocal feature of quantum mechanics. In particular, the degree of measurement incompatibility in a no-signaling theory determines the bound on the violation of Bell-CHSH inequality, and a similar role is also played by (fine-grained) uncertainty along with steering, a subtle non-local phenomenon. We review these connections, along with comments on the difference in the roles played by measurement incompatibility and uncertainty. We also discuss why the toy model of Spekkens (Phys. Rev. A 75, 032110 (2007)) shows no nonlocal feature even though steering is present in this theory.
منابع مشابه
Information complementarity: A new paradigm for decoding quantum incompatibility
The existence of observables that are incompatible or not jointly measurable is a characteristic feature of quantum mechanics, which lies at the root of a number of nonclassical phenomena, such as uncertainty relations, wave--particle dual behavior, Bell-inequality violation, and contextuality. However, no intuitive criterion is available for determining the compatibility of even two (generaliz...
متن کاملDetermining the role of dark triad of personality, intolerance of uncertainty, expression of emotion and empirical avoidance in predicting high-risk sexual behaviors of delinquent adolescents
Juvenile delinquency is a growing social phenomenon that occurs in various forms in society. In this regard, the perpuse of this research was determining the role of the dark triad of personality (machiavellianism, narcissism and anti-socialism), intolerance of uncertainty, expression of excitement and empirical avoidance in predicting high-risk sexual behaviors of delinquent adolescents in Teh...
متن کاملua nt - p h / 03 07 12 3 v 1 1 7 Ju l 2 00 3 Bell inequalities and incompatible measurements
Bell inequalities are a consequence of measurement incompatibility (not, as generally thought, of nonlocality). In classical terms, this is equivalent to contextuality — measurement devices do have a significant effect. Contextual models are reasonable in classical physics, which always took the view that we ignore measurement devices whenever possible, but if that isn’t good enough then we do ...
متن کاملThe uncertainty principle determines the nonlocality of quantum mechanics.
Two central concepts of quantum mechanics are Heisenberg's uncertainty principle and a subtle form of nonlocality that Einstein famously called "spooky action at a distance." These two fundamental features have thus far been distinct concepts. We show that they are inextricably and quantitatively linked: Quantum mechanics cannot be more nonlocal with measurements that respect the uncertainty pr...
متن کاملPersonality-Cognitive Correlates of Social Phobia: Mediator Role of Intolerance of Uncertainty
Objective: Social phobia is considered as one of the most common anxiety disorders. The researchers have been looking for the basic mechanism behind it, since determining these factors can be influential in prevention and treatment. In recent years, some of the most important personality and cognitive correlates of social phobia including neuroticism, fear of negative evaluation, anxiety sensit...
متن کامل