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Title: Quantum transport in d-dimensional lattices

Journal Article · · New Journal of Physics
 [1];  [2];  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Singapore Univ. of Technology and Design (Singapore)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

We show that both fermionic and bosonic uniform d-dimensional lattices can be reduced to a set of independent one-dimensional chains. This reduction leads to the expression for ballistic energy fluxes in uniform fermionic and bosonic lattices. By the use of the Jordan–Wigner transformation we can extend our analysis to spin lattices, proving the coexistence of both ballistic and non-ballistic subspaces in any dimension and for any system size. Lastly, we then relate the nature of transport to the number of excitations in the homogeneous spin lattice, indicating that a single excitation always propagates ballistically and that the non-ballistic behaviour of uniform spin lattices is a consequence of the interaction between different excitations.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0001088
OSTI ID:
1257761
Journal Information:
New Journal of Physics, Vol. 18, Issue 4; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

References (35)

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Heat conduction in low-dimensional quantum magnets journal December 2007
Far-from-Equilibrium Spin Transport in Heisenberg Quantum Magnets journal October 2014
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Controlling and Measuring Quantum Transport of Heat in Trapped-Ion Crystals journal July 2013
Nonequilibrium density-matrix description of steady-state quantum transport journal January 2012
Fermionic transport and out-of-equilibrium dynamics in a homogeneous Hubbard model with ultracold atoms journal January 2012
Expansion Dynamics of Interacting Bosons in Homogeneous Lattices in One and Two Dimensions journal May 2013
Heat transport in low-dimensional systems journal September 2008
Exact solution for a diffusive nonequilibrium steady state of an open quantum chain journal May 2010
Quantum transport efficiency and Fourier's law journal December 2012
Heat transport through lattices of quantum harmonic oscillators in arbitrary dimensions journal January 2013
Coherent quantum transport in disordered systems: A unified polaron treatment of hopping and band-like transport journal April 2015
Coexistence of Diffusive and Ballistic Transport in a Simple Spin Ladder journal February 2013
Magnetization transport in spin ladders and next-nearest-neighbor chains journal November 2013
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Discrete Quantum Walks Hit Exponentially Faster journal February 2005
Hitting time for quantum walks on the hypercube journal March 2006
Quantum walks on embedded hypercubes journal August 2014
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Spatial search by continuous-time quantum walks on crystal lattices journal May 2014
Markovian master equations: a critical study journal November 2010
Quantum Transport in Networks and Photosynthetic Complexes at the Steady State journal February 2013
Stationary quantum coherence and transport in disordered networks journal September 2013
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Cited By (3)

A short introduction to the Lindblad master equation journal February 2020
Harnessing symmetry to control quantum transport journal January 2018
Enhanced exciton transport in an optical cavity field with spatially varying profile journal July 2019

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