散射和吸收表面活性剂中原子间的共振能量交换
Resonant Energy Exchange between Atoms in Dispersing and Absorbing Surroundings
摘要：
在宏观电磁场量子化的框架内，导出了描述存在色散和吸收宏观物体时的共振偶极-偶极相互作用（RDDI）和共振原子-场相互作用（RAFI）的主方程，相关耦合用环境辅助格林张量表示.结果表明，在一定条件下，RDDI可以被视为是由一个有效的哈密顿量。该理论适用于原子与光场的弱耦合和强耦合，研究了两个（二能级）原子在初始共受一个激发时的共振能量交换。特别是，它示出，在政权的弱原子场耦合有一个时间窗口，其中的能量转移遵循的转移率定律的类型得到普通的二阶微扰理论。最后，研究了能量转移过程中发射的光谱，并讨论了谱线分裂。
英文摘要：
Within the framework of quantization of the macroscopic electromagnetic field, a master equation describing both the resonant dipole-dipole interaction (RDDI) and the resonant atom-field interaction (RAFI) in the presence of dispersing and absorbing macroscopic bodies is derived, with the relevant couplings being expressed in terms of the surroundings-assisted Green tensor. It is shown that under certain conditions the RDDI can be regarded as being governed by an effective Hamiltonian. The theory, which applies to both weak and strong atom-field coupling, is used to study the resonant energy exchange between two (two-level) atoms sharing initially a single excitation. In particular, it is shown that in the regime of weak atom-field coupling there is a time window, where the energy transfer follows a transfer-rate law of the type obtained by ordinary second-order perturbation theory. Finally, the spectrum of the light emitted during the energy transfer is studied and the line splittings are discussed.
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