双轴各向异性负折射率材料光纤中光子波函数几何相位研究  

Investigation of photon geometric phases inside a curved fiber made of biaxially anisotropic left_handed media

作　　者：庄飞[1] 沈建其[2,3] 

机构地区：[1]杭州师范学院理学院凝聚态物理研究所 [2]浙江大学(玉泉校区)物理系,浙江近代物理中心 [3]浙江大学(玉泉校区)光及电磁波研究中心,杭州310027

出　　处：《物理学报》2005年第2期955-960,共6页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :90 10 10 2 4);浙江省教育厅教研配套项目 (批准号 :0 42 4XP15 )资助的课题~~

摘　　要：研究了双轴各向异性负折射率材料光纤中光传播特性及光子波函数几何相位的特殊性质 .为体现其拓扑与整体效应 ,光子几何相位必依赖于螺旋光纤中光子波函数演化路径所张开的立体角 .本研究证明 ,在双轴各向异性负折射率材料光纤中 ,因在光的传播过程中正负折射率对于光波几何相位的贡献可以相互抵消 ,因此光子几何相位将与光子波函数演化路径所张锥角无关 .还讨论了源于量子涨落效应的真空水平光子几何相位的物理性质以及在实验上探测这一真空效应的可能性 .The novel optical properties of wave propagation and the special feature of photon geometric phases inside a noncoplanarly curved fiber made of biaxially anisotropic left-handed media are considered in this paper. In general, the photon geometric phases is inevitably dependent on the solid angle subtended by the curve along which the photon moves, which presents the topological and global property of time evolution of photon wavefunctions. It is, however, shown that/inside a biaxially anisotropic left-handed fiber the photon geometric phases will be independent of the cone angle, since the contributions of negative and positive refractive indices to the geometric phases of circularly polarized photons have been cancelled each other. In addition, we discuss briefly the properties of the quantum-vacuum geometric phases resulting from the quantum vacuum fluctuation, and the probability of the detection of-such a vacuum effect in experiments.

关 键 词：几何相位 波函数 负折射率 光子 特殊性质 立体角 光波 光纤 量子涨落 抵消 

分 类 号：TB33[一般工业技术—材料科学与工程]