Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 67: Quantum information: Concepts and methods V
Q 67.4: Vortrag
Freitag, 22. März 2013, 14:45–15:00, E 214
Quantum Transport Enhancement by Time-Reversal Symmetry Breaking — Zoltan Zimboras1,2, Mauro Faccin2, •Zoltan Kadar2, James Whitfield2,3, Ben Lanyon4, and Jacob Biamonte2 — 1Theoretical Physics, University of the Basque Country UPV/EHU, E-48080 Bilbao, Spain — 2Institute for Scientific Interchange Foundation, Via Alassio 11/c, 10126 Torino, Italy — 3Vienna Center For Quantum Science and Technology, Boltzmanngasse 5 1090 Vienna, Austria — 4Institut für Quantenoptik und Quanteninformation, Otto-Hittmair-Platz 21a 6020 Innsbruck, Austria
Quantum mechanics still provides new unexpected effects when considering the transport of energy and information. Models of continuous time quantum walks, which implicitly use time-reversal symmetric Hamiltonians, have been intensely used to investigate the effectiveness of transport. Here we show how breaking time-reversal symmetry in this model can enable directional control, enhancement, and suppression of quantum transport. Examples ranging from exciton transport to complex networks are presented. This opens new prospects for more efficient methods to transport energy and information.