Quantum heat engine with long-range advantages
Abstract
The employment of long-range interactions in quantum devices provides a promising route towards enhancing their performance in quantum technology applications. Here, the presence of long-range interactions is shown to enhance the performances of a quantum heat engine featuring a many-body working substance. We focus on the paradigmatic example of a Kitaev chain undergoing a quantum Otto cycle and show that a substantial thermodynamic advantage may be achieved as the range of the interactions among its constituents increases. Interestingly, such an advantage is most significant for the realistic situation of a finite time cycle: the presence of long-range interactions reduces the non-adiabatic energy losses, by suppressing the detrimental effects of dynamically generated excitations. This effect allows mitigating the trade-off between power and efficiency, paving the way for a wide range of experimental and technological applications.
Cite
@article{arxiv.2208.09492,
title = {Quantum heat engine with long-range advantages},
author = {Andrea Solfanelli and Guido Giachetti and Michele Campisi and Stefano Ruffo and Nicolò Defenu},
journal= {arXiv preprint arXiv:2208.09492},
year = {2023}
}