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arXiv · 0912.3570

Contextuality within quantum mechanics manifested in subensemble mean values

Alok Kumar Pan·Dipankar Home
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Abstract

For spin-1/2 particles, using a suitable Mach-Zehnder-type setup with a spin-flipper, we argue that it is a direct consequence of the quantum mechanical treatment that an experimentally verifiable \textit{subensemble} mean of the measured values of an arbitrarily chosen spin variable exhibits dependence on the choice of a comeasurable `path' observable. This, in turn, enables inferring path-spin contextuality at the level of individual measured values of spin that are predetermined using a relevant hidden-variable model applied to our setup.

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Alok Kumar Pan, Dipankar Home. 2009-12-18. Contextuality within quantum mechanics manifested in subensemble mean values. https://doi.org/10.1016/j.physleta.2009.07.063

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