momentum diffusion meaning in English
动量扩散
Examples
- In this thesis , a semi - classical model of the force on an atom is used to describe the motion of a two - level atom interacting with a standing wave laser field . the velocity dependent force and momentum diffusion are derived through optical bloch equations by using the matrix form of the continued fraction technique . by investigating the dynamic properties of atoms in laser field , we can control and manipulate the mechanical motion of an atom
本文利用半经典理论，从二能级原子在激光驻波场中所满足的运动方程出发，推导出密度矩阵元所满足的递推关系，利用矩阵连分数方法求解出密度矩阵元，从而求出依赖于原子运动速度的光压力与动量扩散系数，通过讨论原子在激光场中的动力学行为，为原子在激光场中被囚禁、形成原子列阵以及可控制的量子态，从而为量子信息处理提供理论基础。 - If the velocity of atoms is near to zero , the light for ces will tend to confine the atoms near to nodes and antinodes . the stability depends on the magnitude of the negative slope of the light force , the depth of the potential well and the momentum diffusion coefficient . it is important to select the parameters , e . g
如果通过激光冷却能使原子速度降至很小甚至为零，光压力的作用将使原子被较稳定地囚禁于激光驻波场的节点和反节点处，其稳定程度取决于该处光压力曲线负斜率的大小、对应势能的势阱深度以及动量扩散系数的大小，因此，如何在实验中合理选择激光强度、失谐量等显得尤为关键。