Berlin 2012 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 13: Transport: Poster Session

TT 13.48: Poster

Montag, 26. März 2012, 15:00–19:00, Poster B

Perfect state transfer in XX chains induced by boundary magnetic fields — •Thorben Linneweber, Joachim Stolze, and Götz S. Uhrig — Institut für Physik, TU Dortmund, Germany

A recent numerical study of short chains found near-perfect quantum state transfer between the boundary sites of a spin-1/2 XX chain if a sufficiently strong magnetic field acts on these sites. We show that the phenomenon is based on a pair of states strongly localized at the boundaries of the system and provide a simple quantitative analytical explanation.