典型文献
Realization of quantum secure direct communication over 100 km fiber with time-bin and phase quantum states
文献摘要：
Rapid progress has been made in quantum secure direct communication in recent years.For practical application,it is important to improve the performances,such as the secure information rate and the communication distance.In this paper,we report an elaborate physical system design and protocol with much enhanced performance.This design increased the secrecy capacity greatly by achieving an ultra-low quantum bit error rate of＜0.1％,one order of magnitude smaller than that of existing systems.Compared to previous systems,the proposed scheme uses photonic time-bin and phase states,operating at 50 MHz of repetition rate,which can be easily upgraded to over 1 GHz using current on-the-shelf technology.The results of our experimentation demonstrate that the proposed system can tolerate more channel loss,from 5.1 dB,which is about 28.3 km in fiber in the previous scheme,to 18.4 dB,which corresponds to fiber length of 102.2 km.Thus,the experiment shows that intercity quantum secure direct communication through fiber is feasible with present-day technology.
文献关键词：
中图分类号：
作者姓名：
Haoran Zhang;Zhen Sun;Ruoyang Qi;Liuguo Yin;Gui-Lu Long;Jianhua Lu
作者机构：
State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics,Tsinghua University,Beijing,China;Beijing Academy of Quantum Information Science,Beijing,China;School of Information and Technology,Tsinghua University,Beijing,China;Beijing Institute of Spacecraft System Engineering,Beijing,China;Frontier Science Center for Quantum Information,Beijing,China;Beijing National Research Center for Information Science and Technology,Beijing,China
文献出处：
引用格式：
[1]Haoran Zhang;Zhen Sun;Ruoyang Qi;Liuguo Yin;Gui-Lu Long;Jianhua Lu-.Realization of quantum secure direct communication over 100 km fiber with time-bin and phase quantum states)[J].光：科学与应用（英文版）,2022(05):787-795
A类：
B类：
Realization,quantum,secure,direct,communication,over,fiber,bin,phase,states,Rapid,progress,been,made,recent,years,For,practical,application,important,improve,performances,such,information,distance,In,this,paper,we,report,elaborate,physical,design,protocol,much,enhanced,This,increased,secrecy,capacity,greatly,by,achieving,ultra,low,bit,error,one,order,magnitude,smaller,than,that,existing,systems,Compared,previous,proposed,scheme,uses,photonic,operating,MHz,repetition,which,can,easily,upgraded,GHz,using,current,shelf,technology,results,our,experimentation,demonstrate,tolerate,more,channel,loss,from,dB,about,corresponds,length,Thus,shows,intercity,through,feasible,present,day
AB值：
0.597381
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
