A1 Refereed original research article in a scientific journal
Quantum transport efficiency in noisy random-removal and small-world networks
Authors: Kurt Arzu, Rossi Matteo A C, Piilo Jyrki
Publisher: IOP Publishing Ltd
Publication year: 2023
Journal: Journal of Physics A: Mathematical and Theoretical
Journal name in source: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
Journal acronym: J PHYS A-MATH THEOR
Article number: 145301
Volume: 56
Issue: 14
Number of pages: 17
ISSN: 1751-8113
eISSN: 1751-8121
DOI: https://doi.org/10.1088/1751-8121/acc0ec(external)
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/179199931(external)
We report the results of an in-depth study of the role of graph topology on quantum transport efficiency in random removal and Watts-Strogatz networks. By using four different environmental models-noiseless, driven by classical random telegraph noise (RTN), thermal quantum bath, and bath + RTN-we compare the role of the environment and of the change in network topology in determining the quantum transport efficiency. We find that small and specific changes in network topology is more effective in causing large change in efficiency compared to that achievable by environmental manipulations for both network classes. Furthermore, we have found that noise dependence of transport efficiency in Watts-Strogatz networks can be categorized into six classes. In general, our results highlight the interplay that network topology and environment models play in quantum transport, and pave the way for transport studies for networks of increasing size and complexity-when going beyond so far often used few-site transport systems.
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