发表机构
School of Physics, Nankai University（南开大学物理学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究针对含掺杂两能级原子或不含掺杂的耦合腔混合系统，利用非线性斯塔克耦合的积木式构造确定了精确多体本征态，揭示其双重物理性质，还发现负斯塔克耦合可调控莫特绝缘体向超流体的转变，为光物质架构的量子态工程提供通用框架。
AI 中文摘要
我们研究了耦合腔的混合系统，其中包含或不包含掺杂的两能级原子。借助非线性斯塔克耦合实现的积木式构造，我们确定了大量精确的多本征态，这些本征态在任意晶格几何结构和原子分布下均保持解析可处理。我们证明，这些精确态根据其光谱位置呈现出双重物理性质：当嵌入混沌多体光谱中时，它们表现为量子伤疤，违反本征态热化假说并发生弱遍历性破缺；相反，作为总激发固定扇区中的基态，它们呈现出非对角长程有序并形成极化激元凝聚体。此外，对局域激发数涨落的数值计算表明，负斯塔克耦合会将莫特绝缘体向超流体的转变推向更弱的腔间隧穿。我们的发现为在各类光物质架构中构建相干量子相和非热化态提供了通用框架。
英文摘要
We study a hybrid system of coupled cavities, with or without two-level atoms doped inside. By employing a building-block construction facilitated by nonlinear Stark coupling, we identify a manifold of exact many-body eigenstates that remain analytically tractable across arbitrary lattice geometries and atom distributions. We demonstrate that these exact states exhibit a dual physical nature depending on their spectral positioning: when embedded within the chaotic many-body spectrum, they manifest as quantum scars that violate the eigenstate thermalization hypothesis and undergo weak ergodicity breaking; conversely, as ground states within fixed-total-excitation sectors, they exhibit off-diagonal long-range order and form polariton condensates. Furthermore, numerical calculations of local excitation-number fluctuations suggest that negative Stark coupling shifts the Mott-insulator to superfluid transition toward weaker inter-cavity hopping. Our findings provide a versatile framework for engineering both coherent quantum phases and non-thermalizing states in diverse light-matter architectures.
