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arXiv · 0909.2206

Post-selected weak measurement beyond the weak value

Tamas Geszti
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Abstract

Closed expressions are derived for the quantum measurement statistics of pre-and postselected gaussian particle beams. The weakness of the pre-selection step is shown to compete with the non-orthogonality of post-selection in a transparent way. The approach is shown to be useful in analyzing post-selection-based signal amplification, allowing measurements to be extended far beyond the range of validity of the well-known Aharonov-Albert-Vaidman limit.

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Tamas Geszti. 2010-04-13. Post-selected weak measurement beyond the weak value. https://doi.org/10.1103/physreva.81.044102

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