We consider a finite-time Otto engine operating on a quantum harmonic oscillator and driven by shortcut-to-adiabaticity (STA) techniques to speed up its cycle. We study its efficiency and power when internal friction, time-averaged work, and work fluctuations are used as quantitative figures of merit, showing that time-averaged efficiency and power are useful cost functions for the characterization of the performance of the engine. We then use the minimum allowed time for validity of STA protocol relation to establish a physically relevant bound to the efficiency at maximum power of the STA-driven cycle.

Abah O., Paternostro M. (2019). Shortcut-to-adiabaticity Otto engine: A twist to finite-time thermodynamics. PHYSICAL REVIEW. E, 99(2) [10.1103/PhysRevE.99.022110].

Shortcut-to-adiabaticity Otto engine: A twist to finite-time thermodynamics

Paternostro M.
Ultimo
Conceptualization
2019-02-08

Abstract

We consider a finite-time Otto engine operating on a quantum harmonic oscillator and driven by shortcut-to-adiabaticity (STA) techniques to speed up its cycle. We study its efficiency and power when internal friction, time-averaged work, and work fluctuations are used as quantitative figures of merit, showing that time-averaged efficiency and power are useful cost functions for the characterization of the performance of the engine. We then use the minimum allowed time for validity of STA protocol relation to establish a physically relevant bound to the efficiency at maximum power of the STA-driven cycle.
8-feb-2019
Settore FIS/03 - Fisica Della Materia
Abah O., Paternostro M. (2019). Shortcut-to-adiabaticity Otto engine: A twist to finite-time thermodynamics. PHYSICAL REVIEW. E, 99(2) [10.1103/PhysRevE.99.022110].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/627635
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