English

A method for measuring the real part of the weak value of spin using non-zero rest mass particles

Quantum Physics 2017-01-18 v1

Abstract

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\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 Δw=1733μm\rm \Delta_{w} = 17 - 33\,\mu m. This is on the limit of our detector resolution and we will discuss ways of increasing Δw\rm \Delta_{w}. The simulation also indicates how we might observe the imaginary part of the weak value.

Keywords

Cite

@article{arxiv.1701.04808,
  title  = {A method for measuring the real part of the weak value of spin using non-zero rest mass particles},
  author = {V. Monachello and R. Flack and B. J. Hiley and R. E. Callaghan},
  journal= {arXiv preprint arXiv:1701.04808},
  year   = {2017}
}