Quadratic power enhancement in extended Dicke quantum battery

• URL: http://arxiv.org/abs/2512.15607v1
• Date: Wed, 17 Dec 2025 17:18:35 GMT
• Title: Quadratic power enhancement in extended Dicke quantum battery
• Authors: Harsh Sharma, Himadri Shekhar Dhar,
• Abstract summary: quadratic enhancement of power in a battery consisting of $N$ two-level systems or spins interacting with two photonic cavity modes.<n>In contrast to Dicke batteries, the power enhancement arises from a $N2$ scaling of both quantum correlations and speed of evolution.
• Score: 1.1172382217477126
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We demonstrate a quadratic enhancement of power in a battery consisting of $N$ two-level systems or spins interacting with two photonic cavity modes, where one of the modes is in the dispersive regime. In contrast to Dicke batteries, the power enhancement arises from a $N^2$ scaling of both quantum correlations and speed of evolution, thus highlighting genuine quantum advantage. Moreover, this hybrid setup is experimentally realizable and ensures that power enhancement is not achieved at significant cost to energy efficiency, while allowing for greater tunability and stable operation in the presence of noise.

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