无衰变二能级原子在电磁场中态的演化

求解了经典电磁场中二能级原子系统的密度矩阵演化方程 ,得到了系统状态的演化规律。     

光纤放大器中原子介质的折射率变化

本文用三能级原子模型描述双频场中光纤放大器的原子介质，讨论介质对弱探测场透明以及折射率变化。     

菲涅耳圆孔衍射计算机模拟演示的实现

为了克服菲涅耳衍射积分计算的复杂性和因光波频率高而导致的采样点数目巨大两大难题,利用Hankel变换算法,将二维计算变换为一维计算,并利用球面波因子处理,在普通PC上实现了菲涅耳圆孔衍射的计算机模拟演示．     

基于OTA的文氏电桥振荡器

提出了基于OTA的文氏电桥振荡器，详细分析了该振荡器的原理，得出了起振条件和振荡频率。     

三能级Σ型原子系统中的光放大

本文分析了一个被相干和非相干泵浦的三能级原子的稳态增益和激光特性，得出产生无反转激光的条件和激光的强度。该系统能实现有粒子数反转激光到无粒子数反转激光的转变。     

Tripartite states Bell-nonlocality sudden death in a spin[1mm] environment with multisite interaction

Tis paper demonstrates that multipartite Bell-inequality violations can be fully destroyed in a finite time in three-qubit states coupled to a general XY spin-chain with a three-site interaction environment. The Mermin—Ardehali—Belinksii—Klyshko inequality is used to detect the degree of nonlocality, as measured by the extent of their violations. The effects of system-environment couplings, the size of degrees of freedom of the environment and the strength of the three-site interaction on the Bell-inequality violations are given. The results indicate that the Bell-inequality violations of the tripartite states will be completely destroyed by decoherence under certain conditions for the GHZ state. The decoherence-free subspaces of our model are identified and the entanglement of quantum states is also discussed.     

基于腔QED制备2n-光子GHZ态

提出一种利用一个2n-能级原子与两个n-模腔相互作用制备2n-模光子GHZ态的方案。在此方案中,2n个量子比特编码在2n个腔模的0- 和 1-光子Fock态中。由于原子与腔场之间相互作用是共振的,因此耦合强度相对较大,这将缩短所需的相互作用时间,从而降低实验中退相干的影响。