Optimal performance of a quantum Otto refrigerator

Obinna Abah, Eric Lutz

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


We consider a quantum Otto refrigerator cycle of a time-dependent harmonicoscillator. We investigate the coefficient of performance at maximum figure of merit for adiabatic and nonadiabatic frequency modulations. We obtain analytical expressions for the optimalperformance both in the high-temperature (classical) regime and in the low-temperature (quantum) limit. We moreover analyze the breakdown of the cooling cycle for strongly nonadiabaticdriving protocols and derive analytical estimates for the minimal driving time allowed for cooling.
Original languageEnglish
Article number60002
Number of pages7
JournalEurophysics Letters (EPL)
Issue number6
Publication statusPublished - 11 Apr 2016


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