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Area of Science:

  • Quantum physics
  • Quantum information science
  • Quantum thermodynamics

Background:

  • Quantum batteries (QBs) offer potential for rapid energy storage.
  • Dissipative environments and coupling regimes significantly impact QB performance.
  • Frequency modulation is a key parameter in controlling quantum system dynamics.

Purpose of the Study:

  • To investigate the charging dynamics of a frequency-modulated quantum battery in a dissipative cavity.
  • To analyze the effects of weak and strong coupling regimes on QB performance.
  • To determine the role of modulation frequency and amplitude in optimizing energy storage and work extraction.

Main Methods:

  • Modeling quantum battery and charger as frequency-modulated qubits.
  • Simulating interactions within a zero-temperature dissipative environment.
  • Analyzing charging performance and ergotropy under varying modulation parameters.

Main Results:

  • Both modulation frequency and amplitude are critical for optimizing QB charging and ergotropy.
  • High-amplitude, low-frequency modulation enhances charging and work extraction in the strong coupling regime.
  • Very low-frequency modulation enables energy storage and work extraction in the weak coupling regime, a novel finding.

Conclusions:

  • Modulation parameters are essential for optimizing quantum battery performance.
  • Frequency modulation offers a pathway to enhance energy storage and work extraction in quantum technologies.
  • The study provides insights into designing efficient quantum batteries for practical applications.