Quantum-Enhanced Heat Engine Based on Superabsorption

TL;DR

This paper introduces a quantum heat engine leveraging superabsorption and entanglement to achieve quadratic power scaling, surpassing classical and separable quantum systems.

Contribution

It presents a novel quantum heat engine design utilizing superabsorption for enhanced energy absorption and quadratic power scaling.

Findings

Quantum heat engine with superabsorption achieves P = Θ(N^2) scaling.

Quantum engine outperforms classical N-particle Langevin systems.

Entanglement enables performance enhancement in quantum thermodynamics.

Abstract

We propose a quantum-enhanced heat engine with entanglement. The key feature of our scheme is superabsorption, which facilitates enhanced energy absorption by entangled qubits. Whereas a conventional engine with $N$ separable qubits provides power with a scaling of $P = \Theta (N)$, our engine uses superabsorption to provide power with a quantum scaling of $P = \Theta(N^2)$. This quantum heat engine also exhibits a scaling advantage over classical ones composed of $N$-particle Langevin systems. Our work elucidates the quantum properties allowing for the enhancement of performance.