  Thermodynamics of nanoscale devices is an active area of research. Despite
their noisy surrounding they often produce mechanical work (e.g. micro-heat
engines), display rectified Brownian motion (e.g. molecular motors). This
invokes research in terms of experimentally quantifiable thermodynamic
efficiencies. Here, a Brownian particle is driven by a harmonic confinement
with time-periodic contraction and expansion. The system produces work by being
alternately (time-periodically) connected to baths with different dissipations.
We analyze the system theoretically using stochastic thermodynamics. Averages
of thermodynamic quantities like work, heat, efficiency, entropy are found
analytically for long cycle times. Simulations are also performed in various
cycle-times. They show excellent agreement with analytical calculations in the
long cycle time limit. Distributions of work, efficiency, and large deviation
function for efficiency are studied using simulations. We believe that the
experimental realization of our model is possible.
