AI 中文总结
该研究在超导量子处理器上实现Floquet-East模型，借助中间电路测量识别玻璃态动力学的动力学异质性，证明噪声中等规模量子设备可作为研究关联多体现象的可扩展测试平台。
AI 中文摘要
中间电路测量可直接获取轨迹级可观测量，揭示多体系统中系综平均量无法显现的动力学结构。我们利用该能力在超导量子处理器上实现并研究Floquet-East模型实例。中间电路测量、受动力学约束的幺正操作与硬件噪声的结合产生了复杂的多体现象。通过分析经时空分辨的中间电路测量所得轨迹，我们识别出玻璃态动力学的标志——动力学异质性。我们通过研究给定大小的非活跃时空区域的发现概率来量化该涌现行为，该量呈现从面积主导标度到周长主导标度的交叉，这是玻璃态的特征性质，且与接近动力学一级相变相关。我们的结果表明，当前的噪声中等规模量子设备是研究测量轨迹层面关联多体现象的可扩展测试平台。
英文摘要
Mid-circuit measurements provide direct access to trajectory-level observables, revealing dynamical structures in many-body systems that are invisible in ensemble-averaged quantities. We exploit this capability to realize and study an instance of the Floquet-East model on a superconducting quantum processor. Here, the combination of mid-circuit measurements, kinetically constrained unitary operations and hardware noise gives rise to intricate many-body phenomena. Analyzing trajectories obtained from temporally and spatially resolved mid-circuit measurements, we identify dynamical heterogeneity --- a hallmark of glassy dynamics. We quantify this emergent behavior by studying the probability of finding inactive space-time regions of a given size. This quantity displays a crossover from area- to perimeter-dominated scaling, which is a characteristic property of glasses and is associated with the proximity to a dynamical first-order phase transition. Our results establish current noisy intermediate-scale quantum devices as scalable testbeds for investigating correlated many-body phenomena at the level of measurement trajectories.
Comments7+8 pages, 3+5 figures, comments welcome
