AI 中文总结
本研究通过非互易耦合腔系统探索不同阶奇异点对纠缠动力学的影响，观察到量子连续纠缠相变，揭示了高阶非厄米物理的新机制。
AI 中文摘要
由于近期实验的进展，对量子系统中非厄米（NH）效应的探索正重新获得动力。已有研究表明，调控奇异点（EPs）阶数的能力可能对其在量子控制中的应用（如加速纠缠生成）至关重要；然而，关于不同阶奇异点之间相互作用的初步调查仍然缺失。在本工作中，我们尝试通过采用一个非互易耦合腔系统来部分解决这一问题，该系统可通过二维可重构NH规范激光阵列在实验上实现。通过精心设计，我们的系统展现出二阶和三阶奇异点。我们观察到一种新颖的、纯粹量子连续纠缠相变的符号，它揭示了多奇异点相互作用如何在不同区域改变纠缠动力学，同时保持加速生成。我们的发现揭示了高阶奇异点的真正量子NH物理，为未来研究高阶简并应用和量子系统动态相变开辟了新途径。
英文摘要
The exploration of the effect of non-Hermitian (NH) in quantum systems is gaining renewed momentum as a result of the recent progress in experiments. It has been indicated that the ability to engineer the orders of exceptional points (EPs) can be fundamental to its applications in quantum control, such as accelerating entanglement generation; however, an initial survey of the interactions between different orders of EPs is still missing. In this work, we try to partially address this issue by employing a non-reciprocally coupled cavity system which can be experimentally realizable with a two-dimensional reconfigurable NH gauged laser array. With deliberate design, our systems display both second and third orders of EPs. The sign of a novel, purely quantum continuous entanglement phase transition is observed, which reveals how multi-EP interactions alter entanglement dynamics across different regimes while maintaining accelerated generation. Our findings reveil the genuinely quantum NH physics of higher-order EPs, which has opened up a new avenue for future investigations of the higher-order degeneracy application and the dynamic phase transitions of quantum systems.
Comments13 pages, 10 figures
