منابع مشابه
Nonlocality without nonlocality∗
Bell’s theorem is purported to demonstrate the impossibility of a nonlocal “hidden variable” theory underpinning quantum mechanics. It relies on the well-known assumption of ‘locality’, and also on a little-examined assumption called ‘statistical independence’ (SI). Violations of this assumption have variously been thought to suggest “backward causation”, a “conspiracy” on the part of nature, o...
متن کاملSelf-testing in parallel with CHSH
Self-testing allows classical referees to verify the quantum behaviour of some untrusted devices. Recently we developed a framework for building large self-tests by repeating a smaller self-test many times in parallel. However, the framework did not apply to the CHSH test, which tests a maximally entangled pair of qubits. CHSH is the most well known and widely used test of this type. Here we ex...
متن کاملTsirelson bounds for generalized CHSH inequalities
Quantum theory imposes a strict limit on the strength of non-local correlations. It only allows for a violation of the CHSH inequality up to the value 2 √ 2, known as Tsirelson’s bound. In this note, we consider generalized CHSH inequalities based on many measurement settings with two possible measurement outcomes each. We demonstrate how to prove Tsirelson bounds for any such generalized CHSH ...
متن کاملApparent nonlocality
Syntactic processes and dependencies are normally restricted to certain domains. * This phenomenon of locality has been a central object of study for decades, and it is still relevant in the Minimalist Program, especially in connection with the idea of phases/cycles. A standard example is provided in (1), where the underscore indicates the regular surface position of the extracted whphrase, the...
متن کاملDistilling nonlocality.
Two parts of an entangled quantum state can have a correlation, in their joint behavior under measurements, that is unexplainable by shared classical information. Such correlations are called nonlocal and have proven to be an interesting resource for information processing. Since nonlocal correlations are more useful if they are stronger, it is natural to ask whether weak nonlocality can be amp...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2020
ISSN: 1367-2630
DOI: 10.1088/1367-2630/ab7bef