Publications in Scientific Journals:
S. Filipp, J. Klepp, Y. Hasegawa, C. Plonka-Spehr, U. Schmidt, P. Geltenbort, H. Rauch:
"Experimental Demonstration of the Stability of Berry´s Phase for a Spin-1/2 Particle";
Physical Review Letters,
102
(2009),
030404;
030404-1
- 030404-4.
English abstract:
The geometric phase has been proposed as a candidate for noise resilient coherent manipulation of fragile quantum systems. Since it is determined only by the path of the quantum state, the presence of noise fluctuations affects the geometric phase in a different way than the dynamical phase. We have experimentally tested the robustness of Berry's geometric phase for spin-1/2 particles in a cyclically varying magnetic field. Using trapped polarized ultracold neutrons, it is demonstrated that the geometric phase contributions to dephasing due to adiabatic field fluctuations vanish for long evolution times.
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevLett.102.030404
Electronic version of the publication:
http://publik.tuwien.ac.at/files/PubDat_173766.pdf
Created from the Publication Database of the Vienna University of Technology.