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arXiv · 2301.08246

Identifying Many-Body Localization in Realistic Dot Arrays

Alexander Nico-Katz·Gulzat Jaliel·Paola Atkinson·Thomas A. Mitchell·David A. Ritchie·Charles G. Smith·Sougato Bose
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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.

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Alexander Nico-Katz, Gulzat Jaliel, Paola Atkinson, Thomas A. Mitchell, David A. Ritchie, Charles G. Smith, Sougato Bose. 2023-01-19. Identifying Many-Body Localization in Realistic Dot Arrays. https://arxiv.org/abs/2301.08246

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