Cooperative fluorescence from N coherently driven two-level atoms
Cooperative fluorescence from N coherently driven two-level atoms
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N 相干驱动的两能级原子的协同荧光
DOI：
10.1088/0022-3700/13/10/008
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
D. Walls
中科院分区：
文献类型：
--
作者：
D. Walls
考虑一个由N个相干驱动的二能级原子组成的系统，该系统包含在一个维度远小于波长的体积中。原子可以通过守恒的完全合作机制衰变(J2)，也可以通过不守恒的机制衰变(J2)。每种情况下的稳态行为都是使用单原子解和两个极限近似来确定的：(A)完全原子关联，(B)无原子关联。在情况(A)中，获得了二级相变的行为特征，而在情况(B)中，得到了一级相变的行为特征。
Considers a system of N coherently driven two-level atoms contained in a volume with dimensions much smaller than a wavelength. The atoms may decay by a completely cooperative mechanism which conserves (J2), alternatively they may decay by a mechanism which fails to conserve (J2). The steady-state behaviour in each case is determined using the single-atom solutions together with two limiting approximations: (a) complete atomic correlation, (b) no atomic correlation. In case (a) a behaviour characteristic of a second-order phase transition is obtained while in case (b) a first-order phase transition results.