Identifying Many-Body Localization in Realistic Dot Arrays
Abstract
We determine whether or not it is possible to identify many-body localization in quantum dot arrays, given their current technological capacities. We analyze the phase diagram of an extended Fermi-Hubbard model - a theoretical system that quantum dot arrays are known to simulate - using several quantities of varying experimental accessibility. By deriving the parameters of our model from our experimental system, we find that many-body localization can potentially be detected in current-generation quantum dot arrays. A pitfall that we identify is that the freezing of a system due to strong interactions yields signatures similar to conventional localization. We find that the most widely-used experimental signature of localization - the imbalance - is not sensitive to this fact, and may be unsuitable as the lone identifier of the many-body localized regime.
Cite
@article{arxiv.2301.08246,
title = {Identifying Many-Body Localization in Realistic Dot Arrays},
author = {Alexander Nico-Katz and Gulzat Jaliel and Paola Atkinson and Thomas A. Mitchell and David A. Ritchie and Charles G. Smith and Sougato Bose},
journal= {arXiv preprint arXiv:2301.08246},
year = {2023}
}
Comments
13 pages, 7 figures