发表机构
Northeast Normal University（东北师范大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究提出通过耦合到共同马尔可夫 reservoir 的两个原子系综形成低耗散动力学通道，在弱驱动和有限失谐下实现鲁棒边界时间晶体，突破了常规边界时间晶体对强驱动和精确共振的严格要求。
AI 中文摘要
受驱动耗散系统中连续时间平移对称性的自发破缺会产生边界时间晶体（BTC），其特征是由相干驱动和集体耗散维持的持续振荡。然而，常规BTC通常需要强驱动和精确的原子-驱动共振，对其实现施加了严格限制。本文考虑两个耦合到共同马尔可夫 reservoir 的原子系综，表明共享耗散将无耗散和低耗散模式组织成动力学可及的低耗散通道，从而在弱驱动和有限失谐下实现BTC。有限失谐进一步从依赖初始态的振荡轨迹族中选出唯一稳定极限环。我们的结果确立了低耗散动力学通道为在宽松的驱动和共振条件下实现鲁棒BTC的一条途径。
英文摘要
Spontaneous breaking of continuous time-translation symmetry in driven-dissipative systems gives rise to boundary time crystals (BTCs), characterized by persistent oscillations sustained by coherent driving and collective dissipation. Conventional BTCs, however, typically require strong driving and exact atom-drive resonance, imposing stringent constraints on their realization. Here we consider two atomic ensembles coupled to a common Markovian reservoir and show that shared dissipation organizes dissipation-free and low-dissipation modes into dynamically accessible low-dissipation channels, enabling BTCs under weak driving and finite detuning. Finite detuning further selects a unique stable limit cycle from an initial-state-dependent family of oscillatory trajectories. Our results establish low-dissipation dynamical channels as a route to robust BTCs under relaxed driving and resonance conditions.
Comments7 Pages main text and 12 Pages Supplementary Material, 4+4 figures
