Anomalous weak values are caused by disturbance
arXiv:2108.04733 · doi:10.1007/s10701-021-00534-w
Abstract
In combination with post-selection, weak measurements can lead to surprising results known as anomalous weak values. These lie outside the bounds of the spectrum of the relevant observable, as in the canonical example of measuring the spin of an electron (along some axis) to be 100. We argue that the disturbance caused by the weak measurement, while small, is sufficient to significantly affect the measurement result, and that this is the most reasonable explanation of anomalous weak values.
arXiv comment~9 pages + four short appendices. v3: One new reference. Add. quotes from the literature. No significant changes to the main text
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