Many-Body Dephasing by Hole Motion in a Spin-Orbit-Coupled Mott Insulator

2024/09/09 by Alexis Ghermaoui, Ghermaoui, A., Manel Bosch Aguilera +11
Economics, Econometrics and Finance · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Complex Systems and Time Series Analysis #FOS: Physical sciences #Quantum Gases (cond-mat.quant-gas)

paper · pdf · doi:10.48550/arxiv.2409.05828

openalex publication_date 2024/09/09 · openalex created_date 2024/09/26 · openalex updated_date 2026/07/28

Abstract

We use Ramsey interferometry to study spin dynamics in the strongly interacting regime of spin-orbit-coupled quantum gases in one-dimensional optical lattices. We observe an intrinsic many-body dephasing mechanism immune to spin-echo in two-component Mott insulators. We ascribe the dephasing to the motion of hole-like defects in an otherwise inert Mott insulator, the spinless nature of the holes explaining the ineffectiveness of spin echo to restore it. We show that a model of spin-orbit-coupled hardcore bosons can explain quantitatively our experimental observations.

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