从通用两带模型的角分辨光电子能谱估计费希尔信息
Estimating the Fisher information from ARPES in general two-band models
浏览论文内容
中文总结 AI 辅助
本研究提出利用角分辨光电子能谱的方案，测量通用两带固态系统任意参数的量子费希尔信息，并探究其与材料基态随系统参数变化的关联条件。
中文摘要 AI 辅助
量子费希尔信息在量子传感和量子计量学领域被广泛研究，它通过克拉美罗界规定了传感器的灵敏度；在凝聚态物理学中，它与量子度量相关。因此，测量量子费希尔信息是当前的重要研究方向。本研究提出一种方案，利用精心调控的入射角和光偏振的角分辨光电子能谱，测量通用两带固态系统中任意参数对应的量子费希尔信息。我们研究了该测量可关联到材料基态随系统参数变化的信息的条件。
英文摘要
The Quantum Fisher information is frequently studied in the fields of quantum sensing and quantum metrology, as it specifies the sensitivity of a sensor through the Crámer-Rao bound, and in condensed matter physics where it relates to the quantum metric. Measuring the quantum Fisher information is therefore of significant current interest. In this work, we propose a scheme for measuring the quantum Fisher information with respect to any parameter in a general two-band solid state system using angle-resolved photoemission spectroscopy with carefully tuned incidence angles and light polarization. We investigate conditions under which this can be related back to information about the ground state of the material itself changing with system parameters.
