学术报告报告主题: Entanglement detection length of multipartite quantum states
报 告 人: 石飞 博士
报告时间：2025年1月10日（星期五）上午10:00-11:00
报告地点：37号楼 3A01
邀 请 人: 李茂生 副教授
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数学学院
2025年1月7日
报告摘要：
Multipartite entanglement is a valuable resource for quantum technologies. However, detecting this resource can be challenging: for genuine multipartite entanglement, the detection may require global measurements that are hard to implement experimentally. Here we introduce the concept of entanglement detection length, defined as the minimum number of particles that have to be jointly measured in order to detect genuine multipartite entanglement. For symmetric states, we show that the entanglement detection length can be determined by testing separability of the marginal states. For general states, we provide an upper bound on the entanglement detection length based on semidefinite programming. We show that the entanglement detection length is generally smaller than the minimum observable length needed to uniquely determine a multipartite state, and we provide examples achieving the maximum gap between these two quantities. (参考文献：arXiv:2401.03367, Phys. Rev. Lett., accepted)
报告人介绍：
石飞，博士毕业于中国科学技术大学，目前在香港大学从事博士后研究。主要研究领域是量子信息理论和组合数学。以第一作者的身份在Phys. Rev. Lett., IEEE Trans. Inf. Theory, New J. Phys., Quantum, Phys. Rev. Res., Phys. Rev. A等期刊发表论文10余篇。荣获2021年度博士生国家奖学金。