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Area of Science:

  • Quantum physics
  • Materials science
  • Energy storage

Background:

  • Quantum batteries (QBs) offer novel energy storage solutions.
  • Organic molecules like perylene bisimide (PBI) dimers are promising for QB platforms.
  • Understanding performance metrics like ergotropy and charging power is crucial.

Purpose of the Study:

  • To develop a theoretical framework for PBI-dimer-based quantum batteries.
  • To investigate the impact of spectral detuning and dipole-dipole interactions on QB performance.
  • To evaluate quantum coherence and thermal resilience in PBI QBs.

Main Methods:

  • Utilized exact diagonalization of the Gibbs state.
  • Employed analytic and numerical resource-theoretic tools.
  • Evaluated ergotropy, charging power, storage capacity, and quantum coherence.

Main Results:

  • Exact resonance between PBI dimers suppresses performance.
  • Finite spectral detuning significantly enhances extractable work, charging power, and storage capacity.
  • Optimal dipole-dipole coupling balances performance metrics and coherence.
  • Coherence-assisted storage remains effective at experimentally relevant temperatures.

Conclusions:

  • Spectral detuning and dipole-dipole interaction are key design principles for PBI QBs.
  • PBI dimers provide a chemically realistic and thermodynamically robust platform for quantum energy storage.
  • This work bridges molecular engineering with practical quantum energy storage applications.