近日，瑞士巴塞尔大学Philipp Treutlein团队研究了基于纠缠原子传感器阵列的多参数估计。2026年1月22日，《科学》杂志发表了这一成果。

在量子计量学领域，人们通过研究多粒子系统的纠缠态来提升最精密时钟与场传感器的测量精度。虽然单参数量子计量技术已较为成熟，但联合多参数估计仍存在概念性挑战，此前仅停留在理论探索阶段。

研究组通过实验演示了利用纠缠原子系综阵列实现的多参数量子计量。通过分割自旋压缩原子系综，研究组构建了具备传感器间纠缠特性的原子传感器阵列，该阵列可灵活配置以共同提升多参数的测量精度。采用最优估计方案，研究组在关键多参数估计任务中实现了对标准量子极限的显著超越，从而为场传感器阵列与成像设备的量子增强概念奠定了实践基础。

附：英文原文

Title: Multiparameter estimation with an array of entangled atomic sensors

Author: Yifan Li, Lex Joosten, Youcef Baamara, Paolo Colciaghi, Alice Sinatra, Philipp Treutlein, Tilman Zibold

Issue&Volume: 2026-01-22

Abstract: In quantum metrology, entangled states of many-particle systems are investigated to enhance measurement precision of the most precise clocks and field sensors. Whereas single-parameter quantum metrology is well established, joint multiparameter estimation poses conceptual challenges and has been explored only theoretically. We experimentally demonstrated multiparameter quantum metrology with an array of entangled atomic ensembles. By splitting a spin-squeezed ensemble, we created an atomic sensor array featuring intersensor entanglement that can be flexibly configured to enhance measurement precision of multiple parameters jointly. Using an optimal estimation protocol, we achieved substantial gains over the standard quantum limit in key multiparameter estimation tasks, thus grounding the concept of quantum enhancement of field sensor arrays and imaging devices.

DOI: adt2442

Source: https://www.science.org/doi/10.1126/science.adt2442