What is the value of an observable between pre- and postselection?

doi:10.1016/j.physleta.2004.01.041

Physics Letters A

Volume 322, Issues 5–6, 8 March 2004, Pages 298-300

https://doi.org/10.1016/j.physleta.2004.01.041 Get rights and content

Abstract

Hall's recent derivation of an exact uncertainty relation [Phys. Rev. A 64 (2001) 052103] is revisited. It is found that the Bayes estimator of an observable between pre- and postselection equals the real part of the weak value. The quadratic loss function equals the expectation of the squared imaginary part of the weak value.

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Acknowledgements

This work was supported by a grant from Buskerud University College.

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What is the value of an observable between pre- and postselection?

Abstract

Section snippets

Acknowledgements

Phys. Lett. A

Phys. Lett. A

Phys. Lett. A

Phys. Lett. A

Phys. Lett. A

Phys. Rev. A

Phys. Rev. Lett.

Phys. Rev. A

The Quantum Theory of Motion