报道了自适应量子态估计（AQSE）的首次实验演示。AQSE的强相合性和渐近有效性已经在数学上得到了证明[ A. Fujiwara J. Phys. A 39 12489（2006）]。本文利用AQSE估计了单光子线偏振角，即左右圆偏振之间的相位参数，并从实验上验证了其强一致性和渐近有效性。AQSE将为量子信息处理和计量学提供一种通用的方法。
英文摘要：
The first experimental demonstration of an adaptive quantum state estimation (AQSE) is reported. The strong consistency and asymptotic efficiency of AQSE have been mathematically proven [ A. Fujiwara J. Phys. A 39 12489 (2006)]. In this Letter, the angle of linear polarization of single photons, the phase parameter between the right and the left circularly polarization, is estimated using AQSE, and the strong consistency and asymptotic efficiency are experimentally verified. AQSE will provide a general useful method in both quantum information processing and metrology.
Demonstration of logical quantum phase estimation for X-ray absorption spectra
Quemix Inc.（Quemix公司）；The University of Tokyo（东京大学）；Honda R&D Co., LTD.（本田研发有限公司）；National Institutes for Quantum Science and Technology (QST)（国立量子科学技术研究院）
Demonstration of machine-learning-enhanced Bayesian quantum state estimation
University of Illinois Chicago（伊利诺伊大学芝加哥分校）；Arizona State University（亚利桑那州立大学）；Oak Ridge National Laboratory（橡树岭国家实验室）；DEVCOM US Army Research Laboratory（美国陆军作战能力发展司令部陆军研究实验室）；Tulane University（杜兰大学）
