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disturbed by the measurement. In the literature weak measurements are also known as unsharp, fuzzy, dull, noisy, approximate, and gentle measurements. Additionally
noncommutativity of measurements, teleportation, interference, the no-cloning and no-broadcasting theorems, and unsharp measurements. The toy model cannot
can be degraded by appearing unsharp, or by appearing to be of low contrast. The former is characterised by the measurement of the distinctness-of-image
introduced by D. Foulis and M. Bennett to serve as a framework for unsharp measurements in quantum mechanics. An effect algebra consists of an underlying
(2005-05-31). "Contextuality for preparations, transformations, and unsharp measurements". Physical Review A. 71 (5): 052108. arXiv:quant-ph/0406166. Bibcode:2005PhRvA