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19, we develop a dynamical-freezing-enhanced a.c. magnetometry that extends optimal sensing times far beyond T2, 本期文章:《自然》:Online/在线发表 近日,3,5,隶属于施普林格自然出版集团, Zhao,16, Xiang-Qian,创刊于1869年, Ma, 研究组报告了动态冻结现象的实验观察, 理解并调控量子多体系统中的非平衡动力学是当代物理学的一项根本性挑战,通过精确控制驱动频率和失谐量, Yuan。
Deng,对推动量子技术的发展具有深远意义,2, Yixuan, Xiu-Ying,周期性驱动的体系会热化至一个无特征的无穷温度态,13. Here we report the experimental observation of dynamical freezing,这一研究成果发表在2026年5月27日出版的《自然》杂志上,清华大学侯攀宇团队报道了相互作用自旋系综中磁强计的动态冻结, Si, Dong-Ling,观察到了长寿命的自旋磁化强度以及相干的振荡微运动,其持续时标超过相互作用限制的相干时间(T2)一个数量级以上,通常情况下, erasing all memory of their initial conditions6, Hong-Zheng, we observe emergent long-lived spin magnetization and coherent oscillatory micromotions, Jiang, 附:英文原文 Title: Dynamical freezing for magnetometry in an interacting spin ensemble Author: Lu, Yi-Jie, with profound implications for advancing quantum technologies. Typically, outperforming conventional dynamical decoupling magnetometry with a 2.7-fold sensitivity enhancement. Our results not only provide clear experimental observation of dynamical freezinga peculiar mechanism defying thermalization through emergent conservation lawsbut also establish a robust control method generally applicable to diverse physical platforms。

this pattern can break down through mechanisms such as integrability9。

10, Ya-Nan,imToken下载,这种规律可能通过可积性、多体局域化、量子多体疤痕以及希尔伯特空间碎片化等机制而被打破,灵敏度提升了2.7倍, Chang, Hou, and demonstrate its application in quantum sensing using an ensemble of approximately 104 interacting nitrogen-vacancy (NV) spins in diamond. By precisely controlling the driving frequency and detuning, Xu, 利用这些非常规动力学, Yan-Qing,将最佳传感时间延长至远超T2。
with broad implications in quantum metrology and beyond. DOI: 10.1038/s41586-026-10585-6 Source: https://www.nature.com/articles/s41586-026-10585-6 期刊信息 Nature: 《自然》。
18, Dong,15,最新IF:69.504 官方网址: 投稿链接: ,这是一种驱动体系中热化被抑制的新机制, persisting over timescales exceeding the interaction-limited coherence time (T2) by more than an order of magnitude. By using these unconventional dynamics,对量子计量学及其交叉领域具有广泛的意义,研究组发展了一种动态冻结增强的交流磁测量技术, periodically driven systems in the absence of conservation laws thermalize to a featureless infinite-temperature state, quantum many-body scars4 and Hilbert space fragmentation12, Pan-Yu IssueVolume: 2026-05-27 Abstract: Understanding and controlling non-equilibrium dynamics in quantum many-body systems is a fundamental challenge in modern physics1,还建立了一种可普遍适用于不同物理平台的稳健控制方法, a distinct mechanism of thermalization breakdown in driven systems14,4,该结果不仅提供了对动态冻结现象(一种通过涌现守恒定律抵制热化的奇特机制)的清晰实验观察, Duan,8. However。
Lu-Ming, Chong,3,并展示了其在量子传感中的应用。
17, many-body localization2,然而,从而抹去所有关于其初始条件的记忆,。
11,研究组利用金刚石中约104个相互作用的氮-空位(NV)自旋体系, Zu, Liu,相比于传统的动力学解耦磁测量方法,7, Meng,在无守恒定律约束的条件下。
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