@inproceedings{12477bd9e7f54a8cafcbe480ba2ee688,
title = "Spin dynamics and quantum transport in quantum spin chains under an oscillating field",
abstract = "Quantum spin-chains subjected to external oscillating fields exhibit a wide range of dynamical behavior depending on the strength and frequency of the field. We investigate here the particular case of a Heisenberg model with a single spin flip; this maps onto a tight-binding model with an oscillating field, which, in turn, is equivalent to a driven-Harper model with sinusoidal time-driving. The Harper models can be mapped to image classical phasespaces. We find that peculiar structures called {"}shearless tori{"} feature very prominently in the classical phase space of the driven-Harper model. We show that quantum-spin wave packets initially located on a {"}shearless torus{"} can travel for a quite long time without broadening. The behavior has potential applications as it may provide a mechanism for non-dispersive transfer of quantum information.",
keywords = "Quantum information, Quantum spin chains, Shearless torus",
author = "K. Kudo and Monteiro, {T. S.}",
year = "2009",
doi = "10.1007/978-90-481-3120-4_25",
language = "English",
isbn = "9789048131181",
series = "NATO Science for Peace and Security Series B: Physics and Biophysics",
publisher = "Springer Verlag",
pages = "253--258",
booktitle = "Complex Phenomena in Nanoscale Systems",
}