Quantum contextuality in a single-neutron optical experiment.
An experimental demonstration of quantum contextuality with neutrons is presented, which intended to exhibit a Kochen-Specker-like phenomenon. Since no perfect correlation is expected in practical experiments, inequalities are derived to distinguish quantitatively the obtained results from predictions by a noncontextual hidden variable theory. Experiments were accomplished with the use of a neutron interferometer combined with spinor manipulation devices. The results clearly violate the prediction of noncontextual theories.
Hasegawa
Yuji
Y
Atominstitut der Osterreichischen Universitäten, Stadionallee 2, A-1020 Vienna, Austria.
Loidl
Rudolf
R
Badurek
Gerald
G
Baron
Matthias
M
Rauch
Helmut
H