Questions tagged [contextuality]

For questions related to contextuality, as relevant to quantum computing and/or quantum information. Contextuality means that in any theory that attempts to explain quantum mechanics deterministically, the measurement result of a quantum observable depends on the specific experimental setup being used to measure that observable.

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What does the probability distribution $\mu_P(\lambda)$ represent in Spekken's contextuality?

In (Spekkens 2005), the author defined an "ontological model" as a model that assumes (page 3, above Eq. 4): That every preparation procedure $P$ is associated with a normalised probability density over the ontic state space $\Omega$, that is, some…
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What do noncontextual scenarios with no quantum model represent?

I've been reading the info about contextual scenarios given in this answer, as well as the outline of the main ideas as presented in section II of (Leifer and Duarte 2020). Following the notation of said paper, I understand a contextuality scenario…
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