Recent theoretical and experimental studies in quantum heat engines show that, the quasi-static regime, it is possible to have higher efficiency than limit imposed by Carnot, provided that engineered reservoirs are used. The however, a strong limitation operation of engines, since infinitely long time required complete cycle. In this paper we propose two-level model as working substance perform...

We investigate how quantum signatures can emerge in a single atom heat engine consisting of an confined tapered trap and subjected to hot cold thermal reservoirs. A similar system was realized experimentally Science 352 , 325 ( 2016 ) SCIEAS 0036-8075 10.1126/science.aad6320 . model such using quadratic optomechanical identify effective Otto cycle the system’s dynamics. compare engine’s perform...