Engineered non-Gaussian Coherence as a Thermodynamic Resource for Quantum Batteries

TL;DR

This paper explores how engineered non-Gaussian quantum states can serve as thermodynamic resources to enhance the performance of quantum batteries, demonstrating potential advantages over Gaussian states.

Contribution

It introduces a framework for generating non-Gaussian states and applies it to optimize quantum battery performance under thermal and environmental conditions.

Findings

Engineered non-Gaussian states improve quantum battery efficiency.

Thermal broadening and environmental coupling can stabilize performance.

The study provides a proof-of-concept for thermodynamic resource exploitation.

Abstract

Accessing quantum advantage (QA) is a legitimate task in energy harvesting devices, and it is potentially reshaping thermodynamic concepts. In this respect, the resourceful quantum non-Gaussian (QNG) states are promising candidates that precisely enable universal quantum operations to enhance thermodynamic performance with capabilities beyond what Gaussian states can achieve. We recently proposed [K. Adhikary, D. W. Moore, and R. Filip, {\em Quantum Sci. Technol.} \textbf{10}, 035048 (2025)] the QNG state generation scheme, which serves as the framework for this study and is directly integrated into the battery setting to figure out QA. By leveraging coherence in the engineered QNG states, we aim to optimize the performance of quantum batteries for various Gaussian charger profiles under unitary dynamics. We further exploit the degree of thermal broadening and environmental coupling to the charger, which is capable of fostering stable performance under precise thermal management. This study provides a proof-of-concept for exploiting thermodynamic resources in quantum energy storage units.