报告人:许振朋 教授,安徽大学 邀请人:张成杰 教授 报告时间:2026年4月27日(周一) 16:20 报告地点:龙赛理科楼 314 会议室 报告人简介: 许振朋教授现就职于安徽大学,毕业于南开大学陈省身数学研究所,毕业后在德国锡根大学从事博士后工作,期间获德国洪堡基金会支持。研究方向为量子力学基础问题和量子信息,专注于不同系统中的量子关联。迄今已在量子信息理论基础领域发表sci论文四十余篇,含physical review letters 8 篇(第一/通讯作者 4 篇),nature communications、science advances、prx quantum 各1 篇。基于以往工作,申请人荣获2021年度奥地利科学院颁发的埃伦费斯特量子基础最佳论文奖。 报告摘要: contextuality, as a distinguishing feature of quantum mechanics, can be revealed by state-independent contextual (si-c) sets and corresponding inequalities. optimal si-c inequalities have been studied in [phys. rev. lett. 109, (2012)] for the ideal scenario. by taking the si-c set with 13 rays as an example, we investigate the optimal si-c inequalities under experimental imperfections, characterized by detection inefficiency and detection error of outcome flip. we first discovered all the extremal symmetric optimal inequalities. then our results identify the thresholds of detection efficiency and rate of detection error for those optimal symmetric inequalities in the heralded and unheralded scenarios. by incorporating measurement disturbance terms, we extend noncontextuality inequalities to capture the disturbance caused by imperfect detection efficiency in sequential measurements. as it turns out, the detection efficiency should be no less than 0. in the heralded scenario and 0. in the unheralded scenario. our findings provide valuable insights for designing robust experimental tests of quantum contextuality in realistic settings. 欢迎各位感兴趣的师生观摩、学习!