Observation of off-diagonal geometric phase in polarized neutron interferometer experiments
Quantum Physics
2009-11-07 v2 Condensed Matter
Abstract
Off-diagonal geometric phases acquired in the evolution of a spin-1/2 system have been investigated by means of a polarized neutron interferometer. Final counts with and without polarization analysis enable us to observe simultaneously the off-diagonal and diagonal geometric phases in two detectors. We have quantitatively measured the off-diagonal geometric phase for noncyclic evolutions, confirming the theoretical predictions. We discuss the significance of our experiment in terms of geometric phases (both diagonal and off-diagonal) and in terms of the quantum erasing phenomenon.
Cite
@article{arxiv.quant-ph/0201054,
title = {Observation of off-diagonal geometric phase in polarized neutron interferometer experiments},
author = {Y. Hasegawa and R. Loidl and G. Badurek and M. Baron and N. Manini and F. Pistolesi and H. Rauch},
journal= {arXiv preprint arXiv:quant-ph/0201054},
year = {2009}
}
Comments
pdf, 22 pages + 8 figures (included in the pdf). In print on Phys. Rev. A