English

The smallest possible heat engines

Quantum Physics 2010-10-29 v1

Abstract

We construct the smallest possible self contained heat engines; one composed of only two qubits, the other of only a single qutrit. The engines are self-contained as they do not require external sources of work and/or control. They are able to produce work which is used to continuously lift a weight. Despite the dimension of the engine being small, it is still able to operate at the Carnot efficiency.

Keywords

Cite

@article{arxiv.1010.6029,
  title  = {The smallest possible heat engines},
  author = {Noah Linden and Sandu Popescu and Paul Skrzypczyk},
  journal= {arXiv preprint arXiv:1010.6029},
  year   = {2010}
}

Comments

5 pages, 2 figures

R2 v1 2026-06-21T16:35:43.562Z