用大学物理知识诠释前沿科技——从光的偏振到量子通信  

ELABORATING FRONTIER TECHNOLOGIES USING COLLEGE PHYSICS KNOWLEDGES——FROM POLARIZATION OF LIGHT TO QUANTUM CONMUNICATION

作　　者：张婷 吴伟 孙仕海 ZHANG Ting;WU Wei;SUN Shihai(Institute for Quantum Science and Technology,College of Science,National University of Defense Technology,Changsha,Hunan 410073;School of Physics and Astronomy,Sun Yat-sen University,Zhuhai,Guangdong 519082)

机构地区：[1]国防科技大学理学院量子信息研究所,湖南长沙410073 [2]中山大学物理与天文学院,广东珠海519082

出　　处：《物理与工程》2024年第2期19-24,共6页Physics and Engineering

摘　　要：在大学物理教学中以科技前沿应用为牵引,用大学物理的语言解释前沿科技进展的原理,拉近基础课和前沿应用的距离,可以促进学生学习物理的兴趣,加深学生对于基础物理原理的理解。本文以量子密钥分配为例,仅用大学物理中偏振的内容就解释了经典的BB84方案的基本原理,并对该方案的实际实现进行了阐述,旨在表明任何理论方案和实际实现都存在相当的距离。本文还介绍了量子通信领域的最新研究进展和目前主要的研究方向,以激发学生主动探索和进一步研究的兴趣和热情。本文是为基础物理原理和高新尖技术之间搭建桥梁的一次有益尝试,相关思路值得在新工科背景下的大学物理教学中推广。During the teaching process,if the teacher could take the frontier application of science and technology as the traction,explain the principles of cutting-edge scientific and technological progress in the language of college physics,and shorten the distance between basic courses and cutting-edge applications,the students'interest in learning physics will be promoted and their understanding of basic physics principles will be deepen.Taking quantum key distribution as an example,this paper explains the basic principle of the classical BB84 scheme with the polarization content in college physics,and expounds the actual implementation of this scheme,aiming to show that there is a considerable distance between the theoretical scheme and the actual implementation.In order to stimulate students'interest and enthusiasm for active exploration,the latest research progress and current main research directions in the field of quantum communication are also introduced.This is a pioneering attempt to bridge the fundamental physics theory and frontier technolies,which is worth promoting in college physics teaching in the context of emerging engineering education.

关 键 词：光的偏振 波片 量子密钥分配 BB84方案 

分 类 号：O436.3[机械工程—光学工程] O413[理学—光学] TN918[理学—物理]