中国科学院数学与系统科学研究院 2019年06月06日(周四) 下午15:00 武汉物数所原子分子光物理学术报告 Quantifying nonclassicality of light 骆顺龙 研究员 中国科学院数学与系统科学研究院 2019年06月06日(周四) 下午15:00 磁共振楼09楼909报告厅 报告人简介： 骆顺龙，1989年毕业于上海交通大学，1995年获武汉大学博士学位，2001年任中国科学院数学与系统科学研究院研究员，博士生导师，2013-2015年任华罗庚应用数学首席研究员。现任中国科学院数学与系统科学研究院应用数学研究所所长，量子计算与量子信息处理研究中心主任。主要从事概率统计和量子信息的研究，论文被引用4000余次（Google Scholar），应邀在第八届国际工业与应用数学大会作一小时大会报告。在Bulletin of the London Mathematical Society, Proceedings of the American Mathematical Society, ComptesRendus de l'Académie des Sciences (Paris)，Journal of Operator Theory 等数学刊物上发表论文50余篇，在Physical Review Letters，Physics Today，Physical Review A, Foundations of Physics，International Journal of Theoretical Physics, Journal of Statistical Physics 等物理刊物上发表论文60余篇。 报告摘要： Identifying the classical-quantum divide and quantifying quantumness (nonclassicality) are fundamental issues in quantum exploration. By use of the Wigner-Yanase skew information [Proc. Nat. Acad. Sci. USA, 49, 910 (1963)], which synthesizes the noncommutativity between quantum states and observables, we introduce a simple yet effective measure for nonclassicality of any bosonic field state. This is achieved by considering measurement of the non-Hermitian annihilation operator from an information-theoretic perspective. This measure, apart from capturing the idea of nonclassicality as quantum uncertainty in a succinct way, is mathematically computable, physically intuitive, and possesses operational significance. We investigate its fundamental properties, and illustrate its physical applications in quantifying nonclassicality of quantum states. We compare it with various existent measures of nonclassicality and illustrate its merits. A related measure of classicality, which is in some sense dual to nonclassicality, is also introduced. This pair of (classicality, nonclassicality) sheds novel insights into the classical-quantum interplay.。 主办单位:武汉物数所原子分子光物理研究部