Topological Quantum Batteries

• URL: http://arxiv.org/abs/2405.03675v3
• Date: Tue, 13 Aug 2024 16:29:31 GMT
• Title: Topological Quantum Batteries
• Authors: Zhi-Guang Lu, Guoqing Tian, Xin-You Lü, Cheng Shang,
• Abstract summary: We propose an innovative design for quantum batteries (QBs) that involves coupling two-level systems to a topological photonic waveguide. We analytically explore the thermodynamic performances of QBs. Our findings offer valuable guidance for improving quantum battery performance through structured reservoir engineering.
• Score: 0.3749861135832073
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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 performances 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 battery and a quantum charger are coupled at the same sublattice within a unit cell, the ergotropy becomes immune to dissipation at that location, facilitated by a dark state and a topologically robust dressed bound state. Third, we show that as dissipation intensifies along with the emergence of the quantum Zeno effect, the charging power of QBs experiences a temporary boost. Our findings offer valuable guidance for improving quantum battery performance through structured reservoir engineering.

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