2020/05/09 by Elinor Zerah-Harush, Yonatan Dubi, Zerah-Harush, Elinor +1 · 4 citations
Chemistry · Engineering · Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #Electrochemical Analysis and Applications #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular Junctions and Nanostructures #Quantum Physics (quant-ph) #Spectroscopy and Quantum Chemical Studies #Statistical Mechanics (cond-mat.stat-mech)
paper · pdf · doi:10.48550/arxiv.2005.04462
openalex publication_date 2020/05/09 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
Understanding the interplay between disorder, environment and interactions is\nkey to elucidating the transport properties of open quantum systems, from\nexcitons in photosynthetic networks to qubits in ion traps. This interplay is\nstudied here theoretically in the context of environment-assisted quantum\ntransport (ENAQT), a unique situation in open system where an\nenvironment-induced dephasing can, counter-intuitively, enhance transport.\nFirst, we show a surprising situation where the particle current grows with\nincreasing disorder, even without dephasing. Then, we suggest a specific\nmechanism for ENAQT (which we dub population uniformization) and demonstrate\nthat it can explain the persistence of ENAQT deep into the disorder-induced\nlocalization regime. Finally, we show that repulsive interactions are\ndetrimental to ENAQT, and lead to an environment-hampered quantum transport.\nOur predictions can readily be tested within the scope of particle current\nexperimental capabilities.\n