Quantum battery based on dipole-dipole interaction and external driving field

Area of Science:

• Quantum Optics
• Quantum Thermodynamics
• Condensed Matter Physics

Background:

• The Dicke model is a foundational concept in quantum optics, detailing the interaction between a quantum cavity field and numerous two-level atoms.
• Quantum batteries represent a novel approach to energy storage, leveraging quantum mechanical principles for enhanced performance.

Purpose of the Study:

• To propose and analyze an efficient quantum battery based on an extended Dicke model.
• To investigate the impact of atomic interactions and external driving fields on quantum battery charging dynamics.
• To explore the scaling of charging power and stored energy with system parameters.

Main Methods:

• Utilizing an extended Dicke model incorporating dipole-dipole interactions and an external driving field.
• Analyzing the charging process of the quantum battery by varying the number of atoms.
• Investigating the maximum stored energy and maximum charging power under different conditions.

Main Results:

• The maximum stored energy demonstrates a critical phenomenon influenced by atomic interactions and the driving field.
• The proposed quantum battery exhibits more stable and faster charging compared to the standard Dicke quantum battery, especially when atom-cavity coupling is not excessively strong.
• Maximum charging power scales superlinearly with the number of atoms (N), following Pmax ∝ βN^α, with a quantum advantage α=1.6 achievable through parameter optimization.

Conclusions:

• The extended Dicke model provides a viable pathway for developing efficient quantum batteries.
• Atomic interactions and external driving fields are crucial for optimizing quantum battery performance.
• The observed superlinear scaling of charging power indicates a significant quantum advantage in energy storage and retrieval.