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Enhancing self-discharging process with disordered quantum batteries.

Mohammad B Arjmandi1,2, Hamidreza Mohammadi1,2, Alan C Santos3,4

  • 1Faculty of Physics, University of Isfahan, P.O. Box 81746-7344, Isfahan, Iran.

Physical Review. E
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Summary
This summary is machine-generated.

Disorder in quantum batteries can counteract self-discharging caused by decoherence. This "incoherent gain of ergotropy" can boost performance and extend the quantum battery

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Area of Science:

  • Quantum Technology
  • Quantum Batteries
  • Quantum Thermodynamics

Background:

  • Quantum batteries offer advanced energy storage but suffer from self-discharging due to decoherence.
  • Performance is typically limited by ergotropy and battery half-life.

Purpose of the Study:

  • Investigate the impact of local field fluctuations, modeled as a disorder term in the Hamiltonian.
  • Explore how disorder affects quantum battery performance metrics.

Main Methods:

  • Theoretical analysis of quantum battery performance under local field fluctuations.
  • Introduction of a disorder term into the system's Hamiltonian.

Main Results:

  • Disorder can compensate for decoherence-induced self-discharging, improving quantum battery performance.
  • An 'incoherent gain of ergotropy' procedure is identified.
  • Optimizing disorder strength and initial states can lead to ergotropy exceeding initial stored energy.
  • Disorder parameter can enhance the quantum battery's half-life.

Conclusions:

  • Local field fluctuations (disorder) can be harnessed to enhance quantum battery performance.
  • This approach offers a novel strategy to overcome decoherence limitations.
  • Further research into disorder and many-body effects in quantum batteries is warranted.