A system is being designed and constructed in order to measure the weak value of spin for atomic systems. The experiment utilises spin-1 metastable helium atoms in the 2 3 S 1 state. This paper outlines the experiment and its features.

Journal of Physics Conference SeriesMar 1, 20163 citations

Bulletin of the American Physical Society

The weak measurement process and the weak value of spin for metastable helium $2^{3}S_{1}$ The weak measurement process and the weak value of spin for metastable helium $2^{3}S_{1}$

Vincenzo Monachello, P. F. Barker, R. L. Flack, Basil J. Hiley

Published May 24, 2016• 0 citations

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Journal of Physics Conference SeriesMar 1, 20163 citations

The weak measurement process and the weak value of spin for metastable helium

2^{3}S_{1}

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

\rm 2^{3}S_{1}

state. A full simulation using the impulsive approximation has been carried out and it predicts a displacement of the beam by

\rm Δ_{w} = 17 - 33\,μm

. This is on the limit of our detector resolution and we will discuss ways of increasing

\rm Δ_{w}

. The simulation also indicates how we might observe the imaginary part of the weak value.