波导量子电动力学系统中最优激发存储和超辐射释放的标度律
Scaling law for optimal excitation storage and superradiant release in waveguide QED systems
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中文总结 AI 辅助
研究波导量子电动力学系统中最优激发存储和释放的标度律，通过两个与半无限波导耦合的发射器系综，发现可扩展激发存储机制，提出三阶段协议，实现快速存储和可控发射，展示了相干和耗散集体相互作用的联合利用。
中文摘要 AI 辅助
驱动耗散量子发射器为可控激发存储和释放提供了强大平台，在量子电池和量子存储中有应用前景。但集体多体系统中的瞬态激发转移常因相干驱动、耗散和关联动力学的复杂相互作用而模糊。本文在两个与半无限波导耦合的发射器系综中发现了一种可扩展的激发存储机制。一个相干驱动系综充当有效激发库，另一个位于耗散节点附近的系综作为亚辐射存储介质。当驱动系综在尺寸上大大超过存储系综时，转移动力学进入几乎无关联状态。在此基础上提出了三阶段存储和释放协议，实现快速激发存储和可控光子发射。结果展示了如何在波导量子电动力学平台中联合利用相干和耗散集体相互作用实现量子能量存储和可编程非平衡动力学。
英文摘要
Driven-dissipative quantum emitters provide a powerful platform for controllable excitation storage and release, with promising applications in quantum batteries and quantum storage. Yet, transient excitation transfer in collective many-body systems is often obscured by the intricate interplay among coherent driving, dissipation, and correlation dynamics. Here, we uncover a scalable excitation-storage mechanism in two emitter ensembles coupled to a semi-infinite waveguide. A coherently driven ensemble acts as an effective excitation reservoir, while a second ensemble positioned near a dissipative node serves as a subradiant storage medium. Surprisingly, when the driven ensemble largely exceeds the storage ensemble in size, the transfer dynamics enters a nearly correlation-free regime, allowing the driven ensemble to behave effectively as a classical excitation source. This reveals a simple scaling law for optimal excitation transfer, under which the storage ensemble approaches near-complete population inversion as the driven ensemble size increases. Building on this mechanism, we propose a three-stage storage-and-release protocol enabling fast excitation storage and controllable photon emission. Our results demonstrate how coherent and dissipative collective interactions can be jointly harnessed for quantum energy storage and programmable nonequilibrium dynamics in waveguide QED platforms.
