Quantum Transport Enhancement by Time-Reversal Symmetry Breaking

被引：54
|
作者：
Zimboras, Zolta [1 ,2 ]
Faccin, Mauro [1 ]
Kadar, Zoltan [1 ]
Whitfield, James D. [1 ,3 ]
Lanyon, Ben P. [4 ]
Biamonte, Jacob [1 ,5 ]
机构：
[1] Inst Sci Interchange, I-10126 Turin, Italy
[2] Univ Basque Country UPV EHU, Dept Theoret Phys, E-48080 Bilbao, Spain
[3] Vienna Ctr Quantum Sci & Technol, A-1090 Vienna, Austria
[4] Inst Quantenopt & Quanteninformat, A-6020 Innsbruck, Austria
[5] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117543, Singapore
来源：
SCIENTIFIC REPORTS | 2013年 / 3卷
基金：
英国工程与自然科学研究理事会;
关键词：
WALKS; ENTANGLEMENT;
D O I：
10.1038/srep02361
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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.
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页数：6
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