Hi Everyone
Just a quick reminder that Nicole’s seminar is today at 11am at PFIZER.
See you there
David
MBL-mobile: Many-body-localized engine
Nicole Yunger Halpern (Caltech Institute for Quantum Information and Matter)
Many-body-localized (MBL) systems do not thermalize under their intrinsic dynamics. This
athermality, we propose, can be harnessed to perform thermodynamic tasks. We illustrate by
formulating an Otto engine cycle for a quantum many-body system. The system is ramped
between thermal and MBL phases, if mesoscopic, or between weakly and strongly localized
MBL regimes, in the thermodynamic limit. MBL systems’ energy-level correlations differ
from thermal systems’. This discrepancy enhances the engine's reliability, precludes
worst-case trials, and enables mesoscale engines to run in parallel in the thermodynamic
limit. We estimate analytically and calculate numerically the engine's efficiency and
per-cycle power. The efficiency mirrors the efficiency of the conventional thermodynamic
Otto cycle. The per-cycle power scales linearly with the system size and
inverse-exponentially with a localization length. This work introduces a thermodynamic
lens onto MBL, which, having been characterized recently, can now be applied in
thermodynamic tasks.
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