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Weak values obtained in matter-wave interferometry
Physical Review A 92Weak values of the spin operator Sz of massive particles, more precisely neutrons, have been experimentally determined by applying a novel measurement scheme. This is achieved by coupling the neutron’s spin weakly to its spatial degree of freedom in a single-neutron interferometer setup. The real and imaginary parts as well as the modulus of the weak value are obtained by a systematical variation of pre- and post-selected ensembles, which enables to study the complex properties of spin weak values.
The article was published in: Physical Review A 92(6): 062121.
This work was supported (in part) by the Fetzer Franklin Fund of the John E. Fetzer Memorial Trust.