Topological Quantum Batteries

We propose an innovative design for quantum batteries (QBs) that involves coupling two-level systems to a topological photonic waveguide. Employing the resolvent method, we analytically explore the thermodynamic performance of QBs. First, we demonstrate that in the long-time limit, only bound states significantly contribute to the stored energy of QBs. We observe that near-perfect energy transfer can occur in the topologically nontrivial phase. Moreover, the maximum stored energy exhibits singular behavior at the phase boundaries, where the number of bound states undergoes a transition. Second, when a quantum charger and a quantum battery are coupled at the same sublattice within a unit cell, the ergotropy…

• CS
  China Scholarship Council
• R
  RIKEN
• NK
  National Key Research and Development Program of China

  Award: 2021YFA1400700
• FR
  Fundamental Research Funds for the Central Universities

  Award: 2024BRA001
• NS
  National Science Fund for Distinguished Young Scholars

  Award: 12425502