Asymmetric well widths and barrier in a bistable potential allow finite-time bit erasure with heat below kT ln 2, bounded below by the effective free-energy change of the process.
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Finite-time quantum Szilard engine with spin working substance has efficiency bounded by η ≤ 1-(1-η_C)ln2/I(t_M), power scaling as P∝t_M^3 (short t_M) or P∝t_M^{-1} (long t_M), and a threshold t_M for positive work after Landauer's erasure cost.
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Improving the efficiency of finite-time memory erasure with potential barrier shaping
Asymmetric well widths and barrier in a bistable potential allow finite-time bit erasure with heat below kT ln 2, bounded below by the effective free-energy change of the process.
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Finite-Time Optimization of Quantum Szilard heat engine
Finite-time quantum Szilard engine with spin working substance has efficiency bounded by η ≤ 1-(1-η_C)ln2/I(t_M), power scaling as P∝t_M^3 (short t_M) or P∝t_M^{-1} (long t_M), and a threshold t_M for positive work after Landauer's erasure cost.