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Quantum Transport Enhancement by Time-Reversal Symmetry Breaking

Autor(en)
Zolta Zimboras, Mauro Faccin, Zoltan Kadar, James D. Whitfield, Ben P. Lanyon, Jacob Biamonte
Abstrakt

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 of the unitary dynamics 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.

Organisation(en)
Quantenoptik, Quantennanophysik und Quanteninformation
Externe Organisation(en)
Istituto per l'Interscambio Scientifico, University of the Basque Country, National University of Singapore (NUS), Österreichische Akademie der Wissenschaften (ÖAW)
Journal
Scientific Reports
Band
3
Anzahl der Seiten
6
ISSN
2045-2322
DOI
https://doi.org/10.1038/srep02361
Publikationsdatum
08-2013
Peer-reviewed
Ja
ÖFOS 2012
103026 Quantenoptik
Schlagwörter
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/998b4c3e-71ec-4cf4-9db6-f7fe3c996b12