Quantum Transport Enhancement by Time-Reversal Symmetry Breaking
Zoltan Zimboras, Mauro Faccin, Zoltan Kadar, James Whitfield, Ben, Lanyon, Jacob Biamonte
TL;DR
This paper demonstrates that breaking time-reversal symmetry in quantum walk models can control and enhance quantum transport, offering new methods for efficient energy and information transfer.
Contribution
It introduces a novel approach to manipulate quantum transport by breaking time-reversal symmetry, expanding the capabilities of quantum walk models.
Findings
Breaking time-reversal symmetry enables directional control of transport.
Symmetry breaking can enhance or suppress quantum transport.
Applications include exciton transport and complex networks.
Abstract
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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