蒙特卡罗波函数方法模拟Rydberg原子系统的集体跃迁  

Monte Carlo Wave-function Method in Simulation of Collective Jump of Rydberg Atoms System

作　　者：黄大用 

机构地区：[1]暨南大学物理系,广州510632

出　　处：《科学技术与工程》2014年第15期129-133,152,共6页Science Technology and Engineering

摘　　要：波函数蒙特卡罗(wave function monte carlo,WFMC)方法,是一种广泛应用于研究量子开放系统的新方法,它与标准的主方程是等价的。将详细介绍了WFMC算法的过程,以及其与主方程的等价性证明和该算法的不足与改进,并针对由Rydberg原子组成的1维(1D)量子系统,运用WFMC方法对该系统的动力学特性进行模拟。研究结果显示,1D Rydberg系统由于原子间dipole-dipole相互作用而会出现集体激发行为。Wave Function Monte Carlo method（ WFMC） is novel and widely used treatment to investigate open quantum system,which is equivalent to the master equation approach. In this paper,a detailed procedure of WFMC will be introduced,the equivalence of WFMC and master equation will be briefly explained,and an improvement of WFMC,the delay function approach,is to be shown. Finally,the dynamics of a 1-dimmentional Rydberg chain was simulated by using the WFMC treatment and the reality that the dipole-dipole interaction between Rydberg atoms would cause collective jumps was confirmed.

关 键 词：蒙特卡罗 量子跃迁 量子轨道 里德伯原子 量子开放系统 

分 类 号：O431.2[机械工程—光学工程]