References & Citations
Quantum Physics
Title: Universal stability towards decoherence in quantum diffusive 1D chains
(Submitted on 11 Jul 2023 (this version), latest version 27 Mar 2024 (v3))
Abstract: Coherent diffusion usually arises between the localized and the ballistic regime, where typically Metal-Insulator Transitions emerge. By studying three different paradigmatic systems, the Harper-Hofstadter-Aubry-Andr\'e, the Fibonacci and the Power-Banded Random Matrices model, we show that in presence of coherent diffusion, transport is exceptionally stable towards decoherence. This is completely at odds with what happens for ballistic and localized dynamics, where the diffusion coefficient strongly depends on the decoherent noise. A universal dependence of the diffusion coefficient with the decoherence strength is analytically derived: the diffusion coefficient remains almost decoherence-independent until the coherence time becomes comparable with the mean elastic scattering time. Thus quantum diffusive systems could be used to design stable quantum wires and explain the functionality of many biological systems, which often operate at the border between the ballistic and localized regime.
Submission history
From: Fabricio Simon Lozano Negro [view email][v1] Tue, 11 Jul 2023 15:49:51 GMT (471kb,D)
[v2] Fri, 20 Oct 2023 18:49:06 GMT (477kb,D)
[v3] Wed, 27 Mar 2024 13:42:11 GMT (500kb,D)
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