How to realize a negative refractive index material at the atomic level in an optical frequency range?

作     者：沈建其 阮智超 何赛灵 

作者机构：CentreforOpticalandElectromagneticResearchJointResearchCentreofPhotonicsoftheRoyalInstituteofTechnology（Sweden）andZhejiangUniversityZhejiangUniversityHangzhou310027China LaboratoryofPhotonicsandMicrowaveEngineeringDepartmentofMicroelectronicsandInformationTechnologyRoyalInstituteofTechnologyElectrum229SE-16440KistaSweden 

出 版 物：《Journal of Zhejiang University Science》 (浙江大学学报（自然科学英文版）)

年 卷 期：2004年第5卷第11期

页      面：1322-1326页

核心收录：

学科分类：0810[工学-信息与通信工程] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070201[理学-理论物理] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation (NSF) of China (Nos. 90101024 and 60378037) and the National Basic Research Program (973) of China (No. 2004CB719805) 

主　　题：Negative refractive index Left-handed medium Electromagnetically induced transparency Atomic level Optical frequency 

摘      要：The theoretical mechanism for realizing a negative refractive index material in an optical frequency range with an atomic gas system of electromagnetically induced transparency (EIT) is studied. It is shown that under certain conditions such a dense gas can exhibit simultaneously negative permittivity and negative permeability, and negligibly small loss.