Quadratic power enhancement in extended Dicke quantum battery

2025/12/17 by Sharma, Harsh, Dhar, Himadri Shekhar
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum optics and atomic interactions #Mechanical and Optical Resonators

paper · doi:10.48550/arxiv.2512.15607

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 N² 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.

Citations

• Large collective power enhancement in dissipative charging of a quantum battery
• Multilayer microwave integrated quantum circuits for scalable quantum computing
• Relation between the Anderson and Kondo Hamiltonians
• Field Dependence of the Intrinsic Domain Magnetization of a Ferromagnet

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