Abstract
In the weak value formalism of Aharonov et al., the weak value of any observable is generally a complex number. We derive a physical interpretation of its value in terms of the shift in the measurement pointer’s mean position and mean momentum. In particular, we show that the mean position shift contains a term jointly proportional to the imaginary part of the weak value and the rate at which the pointer is spreading in space as it enters the measurement interaction.
- Received 2 July 2007
DOI:https://doi.org/10.1103/PhysRevA.76.044103
©2007 American Physical Society