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Transport enhancement from incoherent coupling between one-dimensional quantum conductors

Mendoza-Arenas, JJ and Mitchison, MT and Clark, SR and Prior, J and Jaksch, D and Plenio, MB (2014) Transport enhancement from incoherent coupling between one-dimensional quantum conductors. New J. Phys., 16. 053016 - ?.

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Abstract

We study the non-equilibrium transport properties of a highly anisotropic two-dimensional lattice of spin-1/2 particles governed by a Heisenberg XXZ Hamiltonian. The anisotropy of the lattice allows us to approximate the system at finite temperature as an array of incoherently coupled one-dimensional chains. We show that in the regime of strong intrachain interactions, the weak interchain coupling considerably boosts spin transport in the driven system. Interestingly, we show that this enhancement increases with the length of the chains, which is related to superdiffusive spin transport. We describe the mechanism behind this effect, compare it to a similar phenomenon in single chains induced by dephasing, and explain why the former is much stronger.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Mendoza-Arenas, JJ
Mitchison, MT
Clark, SR
Prior, J
Jaksch, D
Plenio, MB
Date: 2014
Journal or Publication Title: New J. Phys.
Volume: 16
Page Range: 053016 - ?
DOI or Unique Handle: 10.1088/1367-2630/16/5/053016
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
Uncontrolled Keywords: cond-mat.str-el, cond-mat.str-el, cond-mat.stat-mech, quant-ph
Official URL: http://dx.doi.org/10.1088/1367-2630/16/5/053016
Date Deposited: 20 Feb 2023 20:48
Last Modified: 21 Aug 2024 17:20
URI: http://d-scholarship.pitt.edu/id/eprint/44209

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