Hi Everyone
There are still some meeting spots available for talking with Nicole Yunger Halpern. She
will be here on May 22nd and 23rd. On May 23rd we will also have lunch with here and
there are still some open spots for this too. Please let me know if you are interested on
meet her or joining us for lunch.
Her seminar will take place at 11am on Pfizer auditorium. You can find the abstract at end
of this e-mail.
Best
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.
Reference: Coming soon!
Co-conspirators: Christopher D. White, Sarang Gopalakrishnan, Gil Refael[clip_image002]
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