Recently,Long et al.[1]at the Beijing Academy of Quantum Information Sciences,in collaboration with the partners,proposed the theory of oneway quantum secure direct communication(QSDC)and successfully developed a prac...Recently,Long et al.[1]at the Beijing Academy of Quantum Information Sciences,in collaboration with the partners,proposed the theory of oneway quantum secure direct communication(QSDC)and successfully developed a practical system.This achievement set a world record for long-distance stable transmission,demonstrating a rate of 2.38 kbps at a distance of 104.8 km over 168 hours.展开更多
Quantum key distribution(QKD)guarantees informationtheoretic security through the fundamental principles of quantum mechanics.As its matures,QKD networks have achieved long-distance deployment,showing significant adva...Quantum key distribution(QKD)guarantees informationtheoretic security through the fundamental principles of quantum mechanics.As its matures,QKD networks have achieved long-distance deployment,showing significant advancements in practical quantum-security communication infrastructure[1].When transitioning to large scale quantum communication networks with complicated topologies,conventional paradigms,which are based on point-to-point QKD links connected by trusted nodes,face technical challenges on achieving scalability and optimizing resource allocation.Quantum entanglements are important resources for quantum networks.展开更多
IntroductionTwo major components.a syllabus and a communicative methodology constitute the CommunicativeLanguage Teaching Approach.A syllabus specifies what to teach while a methodology deals with how toteach it.A com...IntroductionTwo major components.a syllabus and a communicative methodology constitute the CommunicativeLanguage Teaching Approach.A syllabus specifies what to teach while a methodology deals with how toteach it.A communicative methodology means a methodology based on real language use.in whichlearners are required to use language to achieve real outcomes.Communicative methodology has alwaysassumed a place of central importance in Communicative Language Teaching,which has gainedmomentum in language teaching in Britain as well as in other parts of the globe.Although.there havebeen diverse opinions and proposals concerning communicative methodology,it is possible to identify themethodology,which,I believe,can provide useful guidelines for College English Teaching in China.These principles will be addressed and their pedagogical implications discussed in this article.展开更多
文摘Recently,Long et al.[1]at the Beijing Academy of Quantum Information Sciences,in collaboration with the partners,proposed the theory of oneway quantum secure direct communication(QSDC)and successfully developed a practical system.This achievement set a world record for long-distance stable transmission,demonstrating a rate of 2.38 kbps at a distance of 104.8 km over 168 hours.
文摘Quantum key distribution(QKD)guarantees informationtheoretic security through the fundamental principles of quantum mechanics.As its matures,QKD networks have achieved long-distance deployment,showing significant advancements in practical quantum-security communication infrastructure[1].When transitioning to large scale quantum communication networks with complicated topologies,conventional paradigms,which are based on point-to-point QKD links connected by trusted nodes,face technical challenges on achieving scalability and optimizing resource allocation.Quantum entanglements are important resources for quantum networks.
文摘IntroductionTwo major components.a syllabus and a communicative methodology constitute the CommunicativeLanguage Teaching Approach.A syllabus specifies what to teach while a methodology deals with how toteach it.A communicative methodology means a methodology based on real language use.in whichlearners are required to use language to achieve real outcomes.Communicative methodology has alwaysassumed a place of central importance in Communicative Language Teaching,which has gainedmomentum in language teaching in Britain as well as in other parts of the globe.Although.there havebeen diverse opinions and proposals concerning communicative methodology,it is possible to identify themethodology,which,I believe,can provide useful guidelines for College English Teaching in China.These principles will be addressed and their pedagogical implications discussed in this article.
