2025/12/17 by Sharma, Harsh, Dhar, Himadri Shekhar
Computer Science · Physics and Astronomy · #Battery (electricity) #Energy (signal processing) #Mechanical and Optical Resonators #Mode (computer interface) #Photonics #Power (physics) #Quadratic equation #Quantum #Quantum Information and Cryptography #Quantum optics and atomic interactions #Scaling #Spins
paper · open access · doi:10.48550/arxiv.2512.15607
published in arXiv (Cornell University) (Cornell University)
openalex publication_date 2025/12/17 · openalex created_date 2025/12/19 · openalex updated_date 2026/07/28
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.