Lu Zhi-Guang, Tian Guoqing, Lü Xin-You, Shang Cheng
Huazhong University of Science and Technology, School of Physics and Institute for Quantum Science and Engineering, and Wuhan Institute of Quantum Technology, Wuhan 430074, China.
The University of Tokyo, Department of Physics, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8574, Japan.
Phys Rev Lett. 2025 May 9;134(18):180401. doi: 10.1103/PhysRevLett.134.180401.
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 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 in realistic conditions through structured reservoir engineering.
我们提出了一种用于量子电池（QBs）的创新设计，该设计涉及将二能级系统耦合到拓扑光子波导。采用预解式方法，我们对量子电池的热力学性能进行了分析研究。首先，我们证明在长时间极限下，只有束缚态对量子电池的储能有显著贡献。我们观察到在拓扑非平凡相中可以发生近乎完美的能量转移。此外，最大储能在相边界处表现出奇异行为，在相边界处束缚态的数量会发生转变。其次，当量子充电器和量子电池在一个晶胞内的同一子晶格处耦合时，由于暗态和拓扑稳健的缀饰束缚态，熵变在该位置对耗散具有免疫性。第三，我们表明随着耗散随着量子芝诺效应的出现而加剧，量子电池的充电功率会经历暂时的提升。我们的研究结果为通过结构化储能工程在实际条件下提高量子电池性能提供了有价值的指导。
