学术报告20251101：Quantifying imaginarity of quantum operations

主 题：Quantifying imaginarity of quantum operations

报告人：吴照奇 南昌大学教授

摘 要：Complex numbers are theoretically proved and experimentally confirmed as necessary in quantum mechanics and quantum information, and a resource theory of imaginarity of quantum states has been established. In this work, we establish a framework to quantify the imaginarity of quantum operations from the perspective of the ability to create or detect imaginarity, following the idea by Theurer et al. [Phys. Rev. Lett. 122, 190405 (2019)] used in coherence theory. We introduce two types of imaginarity measures of quantum operations based on the norm and the weight, investigate their properties and relations, derive the analytical formulas of the measure under the trace norm for qubit unitary operations, and present some applications in channel discrimi nation and entanglement-assisted exclusion. The results provide new insights into imaginarity of operations and deepen our understanding of dynamical imaginarity.

报告人简介：吴照奇，南昌大学数学与计算机学院数学系副主任，教授，博士生导师，国家级教学成果二等奖、江西省自然科学二等奖、江西省杰出青年基金获得者，主要研究方向为量子信息与量子计算。美国《Mathematical Reviews》评论员，德国《Zentralblatt Math.》评论员，德国马克斯-普朗克数学研究所、南开大学陈省身数学研究所访问学者，中国高等教育学会教育数学专委会理事，CSIAM大数据与人工智能专委会委员，CCF量子计算专委会执行委员，江西省数学学会副秘书长。主持（含完成）国家自然科学基金项目4项、江西省自然科学基金项目3项，以第一或通讯作者在Science China-Physics, Mechanics & Astronomy, Journal of Physics A, Quantum Information Processing, Physics Letters A, Physica Scripta, Communications in Theoretical Physics, EPL等期刊发表学术论文40余篇。

报告时间：2025年11月1日上午10:00-11:00

报告地点：创新楼北楼512

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内蒙古大学数学科学学院

2025年10月23日