The analogy between optical beam shifts and quantum weak measurements

Details The analogy between optical beam shifts and quantum weak measurements The analogy between optical beam shifts and quantum weak measurements

2012-04-02

arxiv.org/abs/1204.0327v1

Physics

Optics

14 pages, 2 figures. IoP style

Scientific paper

We describe how the notion of optical beam shifts (including the spatial and angular Goos-H\"anchen shift and Imbert-Federov shift) can be understood as a classical analogue of a quantum measurement of the polarization state of a paraxial beam by its transverse amplitude distribution. Under this scheme, complex quantum weak values are interpreted as spatial and angular shifts of polarized scalar components of the reflected beam. This connection leads us to predict an extra spatial shift for beams with a radially-varying phase dependence.

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