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Necessity of Feedback Control for the Quantum Maxwell Demon in a Finite-Time Steady Feedback Cycle

We revisit quantum Maxwell demon in thermodynamic feedback cycle in the steady-state regime. We derive a generalized version of the Clausius inequality for a finite-time steady feedback cycle with a single heat bath. It is shown to be tighter than previously known ones, and allows us to clarify that feedback control is necessary to violate the standard Clausius inequality.

preprint2022arXivOpen access
Kenta KoshiharaKazuya Yuasa
cond-mat.stat-mechquant-ph
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Kenta KoshiharaKazuya Yuasa

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