单模光子在光纤中运动的极化及几何相因子  

Polarization of single-mode photon propagating inside the fiber and its geometric phase factor

作　　者：沈建其[1,2] 朱红毅[1,2] 施申蕾[2] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,光及电磁波研究中心 [2]浙江近代物理中心,浙江大学物理系,杭州310027

出　　处：《物理学报》2002年第3期536-540,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :19775 0 40 );浙江省重大科技项目 (批准号 :0 0 110 10 2 7)资助的课题~~

摘　　要：研究在光纤中运动的单模光子在固定系中的自旋算符表式 ,在将螺旋度当作不变量的基础上构造使光纤中光子极化面转动的有效哈密顿量 ,运用与不变量有关的幺正变换方法 ,获得了光纤中运动光子演化方程 (含时薛定谔方程 )的精确解 ,并研究光子在光纤中运动的极化问题 ,包括几何相因子、总哈密顿量和波函数演化算符的显式 .The form of the spin operator of the single-mode photon propagating inside an optical fiber is derived for a fixed system.On the basis that the helicity of the photon is regarded as an invariant,we construct the effective Hamiltonian,which leads to the rotating polarization plane of the single-mode photon,and obtain the exact solutions of the time-dependent Schrdinger equation describing the motion of a photon in the optical fiber,by making use of the invariant-related unitary transformation formulation.Based on this,we investigate the polarization of the single-mode photon moving in the fiber, and the physical consequences comprise the geometric phase factor,the total Hamiltonian as well as the explicit expression for the time-evolution operator of the wave function.

关 键 词：几何相因子 光纤 光变量 幺正变换 单模光子 极化 运动光子 量子力学 

分 类 号：TN818[电子电信—信息与通信工程]