Publications in Scientific Journals:

St. Sponar, J. Klepp, K. Durstberger-Rennhofer, R. Loidl, S. Filipp, M. Lettner, R. Bertlmann, G. Badurek, H. Rauch, Y. Hasegawa:
"New aspects of geometric phases in experiments with polarized neutrons";
Journal of Physics A: Mathematical and Theoretical, 43 (2010), 354015.

English abstract:
Geometric phase phenomena have been observed with single neutrons in
polarimeter and interferometer experiments. Interacting with static and timedependent
magnetic fields, the state vectors acquire a geometric phase tied to the
evolution within spin subspace. In a polarimeter experiment the non-additivity
of quantum phases for mixed spin input states is observed. In a Si perfectcrystal
interferometer experiment appearance of geometric phases, induced by
interaction with an oscillating magnetic field, is verified. The total system is
characterized by an entangled state, consisting of neutron and radiation fields,
governed by a Jaynes-Cummings Hamiltonian. In addition, the influence of
the geometric phase on a Bell measurement, expressed by the Clauser-Horne-
Shimony-Holt (CHSH) inequality, is studied. It is demonstrated that the effect
of the geometric phase can be balanced by an appropriate change of Bell angles.

"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)

Electronic version of the publication:

Created from the Publication Database of the Vienna University of Technology.