Quantum battery of interacting spins with environmental noise

Abstract

A quantum battery is a temporary energy-storage system. We constructed the quantum battery model of an N-spin chain with nearest-neighbor hopping interaction and investigated the charging process of the quantum battery. We obtained the maximum energy in the quantum battery charged by a coherent cavity driving field or a thermal heat bath. We confirmed that for a finite-length spin chain, thermal charging results in a nonzero ergotropy, contradicting a previous result: that an incoherent heat source cannot charge a single-spin quantum battery. The nearest-neighbor hopping interaction induces energy band splitting, which enhances the energy storage and the ergotropy of the quantum battery. We found a critical point in the energy and ergotropy resulting from the ground-state quantum phase transition, after which the energy significantly enhance. Finally, we also found that disorder increased the energy of the quantum battery.

References in corpus (5)

• Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
• Dissipative charging of a quantum battery
• Quantum versus classical many-body batteries
• Charging and energy fluctuations of a driven quantum battery
• Simulation of noise-assisted transport via optical cavity networks

Cited by in corpus (4)

• Optimal charging of open spin-chain quantum batteries via homodyne-based feedback control
• Off-resonant Dicke Quantum Battery: Charging by Virtual Photons
• Quantum enhancement of a single quantum battery by repeated interactions with large spins
• Quantum battery based on dipole-dipole interaction and external driving field