Generating Metrologically Useful Entanglement with Collective Light–Matter Dynamics

报告题目:Generating Metrologically Useful Entanglement with Collective Light–Matter Dynamics

报告人:史海龙 博士(意大利科学院光学研究所,CNR-INO)

报告时间:2026年7月17日(周五)上午10:30

报告地点:光电所二层报告厅

报告摘要:  

Quantum Fisher information provides a powerful criterion for identifying multipartite entanglement useful for quantum metrology. A central question is how such metrologically useful entanglement can be dynamically generated from simple separable states. In this talk, I first discuss our result showing that short-range interacting systems constrained by Lieb–Robinson dynamics are strongly limited in generating Heisenberg-scaling quantum Fisher information, highlighting the importance of long-range correlations. I then focus on collective chaotic spin dynamics, where the evolution is confined to the permutation-symmetric Krylov space and can generate multipartite entanglement with Heisenberg-limited metrological potential. Finally, I discuss how such collective models, as well as related schemes for generating metrologically useful entanglement, may be explored in cavity QED and beyond.

报告人简介:

史海龙,博士,现为意大利科学院光学研究所(CNR-INO)博士后,2018 年本科毕业于西北大学,2023 年获得中国科学院精密测量科学与技术创新研究院博士学位,主要从事量子计量、量子信息与量子多体物理交叉方向的理论研究。近年来围绕多体纠缠、量子资源、非平衡动力学及其在高精度测量中的应用开展了一系列工作。已发表论文 22 篇,其中包括 3篇Physical Review Letters、1篇Nature Communications,相关成果累计引用 1000 余次。本报告将介绍其近期关于量子度量学有用的纠缠态产生的研究。




责编丨冯   伟

二审丨曲睿娟

三审丨高   星