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Monachello, V.Flack, R.Hiley, B.J.Callaghan, R.E. Department of Physics and Astronomy,
University College,
London, U.K.

TPRU, Birkbeck,
Uiversity of London,
U.K. 2017 Physics
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A method for measuring the real part of the weak value of spin using non-zero rest mass particles

arXiv
Monachello, V.Flack, R.Hiley, B.J.Callaghan, R.E. Department of Physics and Astronomy,
University College,
London, U.K.

TPRU, Birkbeck,
Uiversity of London,
U.K. 2017 Physics

A method for measuring the real part of the weak (local) value of spin is presented using a variant on the original Stern-Gerlach apparatus. The experiment utilises metastable helium in the 23S1 state. A full simulation using the impulsive approximation has been carried out and it predicts a displacement of the beam by ∆w = 17 − 33 μm. This is on the limit of our detector resolution and we will discuss ways of increasing ∆w. The simulation also indicates how we might observe the imaginary part of the weak value.

The article was published in: arXiv

Full article

This work was supported (in part) by the Fetzer Franklin Fund of the John E. Fetzer Memorial Trust.