Single-Atom Heat Machines Enabled by Energy Quantization

Physical Review Letters
David Gelbwaser-KlimovskyVladan Vuletic

Abstract

Quantization of energy is a quintessential characteristic of quantum systems. Here we analyze its effects on the operation of Otto cycle heat machines and show that energy quantization alone may alter and increase machine performance in terms of output work, efficiency, and even operation mode. We show that this difference in performance occurs in machines with inhomogeneous energy level scaling, while quantum machines with homogeneous level scaling behave like classical machines. Our results demonstrate that quantum thermodynamics enables the realization of classically inconceivable Otto machines, such as those with an incompressible working substance. We propose to measure these effects experimentally using a laser-cooled trapped ion as a microscopic heat machine.

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Citations

Sep 11, 2019·Physical Review. E·George ThomasSibasish Ghosh
Sep 11, 2019·Physical Review. E·Jong-Min ParkJae Dong Noh
Jul 25, 2019·Physical Review. E·J Onam GonzálezLuis A Correa
Aug 21, 2021·Physical Review. E·Jefferson Luan Diniz de OliveiraCleverson Filgueiras

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