Autonomous Implementation of Thermodynamic Cycles at the Nanoscale

There are two paradigms to study nanoscale engines in stochastic and quantum thermodynamics. Autonomous models, which do not rely on any external time-dependence, models that make use of time-dependent control fields, often combined with dividing the protocol into idealized strokes a thermodynamic cycle. While latter paradigm offers theoretical simplifications, its utility practice has been questioned due involved approximations. Here, we bridge by constructing an autonomous model, implements cycle certain parameter regime. This effect is made possible self-oscillations, realized our model well studied electron shuttling mechanism. Based experimentally realistic values, find analysis for single-electron working fluid {\it not} justified, but few-electron could suffice justify it. Furthermore, additional open challenges remain autonomously implement more Carnot Otto cycles.