College PhysicsPub Date : 2013-05-20DOI: 10.7498/APS.62.104201
Wang Zhao-na
{"title":"Two methods for general laws of reflection and refraction for metasurface with phase discontinuity","authors":"Wang Zhao-na","doi":"10.7498/APS.62.104201","DOIUrl":"https://doi.org/10.7498/APS.62.104201","url":null,"abstract":"Considering the abrupt phase shift at the interface between the two media,the general reflection and refraction laws at the metasurface with the abrupt phase shift are derived by the two methods based on Fermat's principle and the boundary conditions of continuity,respectively.It is found that the tradition reflection and refraction laws are the special cases of the generalized reflection and refraction laws when the phase shift gradient is equal to zero.Based on the generalized laws of reflection and refraction,the occurrence conditions of the total internal reflection and the full transmission are given and the effect of the refraction index and the phase shift gradient are discussed.It is shown that the arbitrary controlling of the electromagnetic waves can be easily achieved.","PeriodicalId":433494,"journal":{"name":"College Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130575731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
College PhysicsPub Date : 2007-04-20DOI: 10.7498/aps.56.1875
Zha Xin-wei
{"title":"The expansion of orthogonal complete set and transformation operator in teleportation","authors":"Zha Xin-wei","doi":"10.7498/aps.56.1875","DOIUrl":"https://doi.org/10.7498/aps.56.1875","url":null,"abstract":"In accordance with the principle of superposition,for the teleportation of an arbitrary three-particle state via three pair nonmaximally entangled particles, the system state of particles can be expanded by Bell bases and transformation operator, and the teleportation can be realized only by performing a inverse transformation. The relation of transformation operators with unitary operation is discussed. The necessary condition to realize the teleportation is that the transformation operators have inverse operators.","PeriodicalId":433494,"journal":{"name":"College Physics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130635058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
College PhysicsPub Date : 1900-01-01DOI: 10.1887/0750309822/b1130v1b5
Jing Xiaogong
{"title":"Dirac δ function","authors":"Jing Xiaogong","doi":"10.1887/0750309822/b1130v1b5","DOIUrl":"https://doi.org/10.1887/0750309822/b1130v1b5","url":null,"abstract":"Based on the definition of Dirac-delta function δ(x),no definition at x=0 for δ(x)is explained.The δ(x) possesses a dimension of the reciprocal of x and the physical significance of x operator's eigenfunction.Some ambiguities in quantum mechanics textbooks are clarified.","PeriodicalId":433494,"journal":{"name":"College Physics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131799909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}