报告题目：基于高阶关联对宏观实在性的无漏洞检验方案

报 告 人：王评 副研究员，北京师范大学

研究方向：量子精密测量

报告时间：2024年5月10日（星期五）上午9:00

报告地点：量子楼410报告厅

报告摘要：

Test of {macroscopic realism} (MR) is key to understanding the foundation of quantum mechanics. Due to the existence of the {non-invasive measurability} loophole and other interpretation loopholes, however, such test remains an open question. Here we propose a general inequality based on high-order correlations of measurements for a loophole-free test of MR at the weak signal limit. Importantly, the inequality is established using the statistics of raw data recorded by classical devices, without requiring a specific model for the measurement process, so its violation would falsify MR without the interpretation loophole. The non-invasive measurability loophole is also closed, since the weak signal limit can be verified solely by measurement data (using the relative scaling behaviors of different orders of correlations). We demonstrate that the inequality can be broken by a quantum spin model. The inequality proposed here provides an unambiguous test of the MR principle and is also useful to characterizing {quantum coherence}.

报告人简介：

王评，副研究员。2007年毕业于合肥工业大学，2015年在中国科学技术大学近代物理系获得博士学位，指导老师为杜江峰教授以及北京计算科学研究中心的杨文教授。2016年到2021年在香港中文大学刘仁保教授的指导下从事量子精密测量理论的研究。2021年加入北京师范大学珠海校区，主要研究方向为量子精密测量。至今以第一作者或者通讯作者Physical Review Letters, Nature Communication上发表多篇文章。