二能级原子-双模腔场系统中原子的崩塌与回复现象

Atomic Collapse and Revival in a Two-level Atom Coupled to Two-mode Cavity System

借助于数字模拟方法分析了二能级原子与双膜辐射腔场相互作用的Jaynes Cummings模型,结果表明:腔场处于双模真空场,原子振荡与单光子相似;当失谐模制备于粒子数态,原子的拉比振荡频率随光子数和原子与腔场的耦合系数比增大而增大,并发生原子的相干捕获;当失谐模制备于相干态,原子展现规则地崩塌与回复现象,且随相干光场平均光子数的增大,拉比频率增大,振荡的幅度减小.

The interaction of single two-level atom with two-mode cavity is investigated by means of fully quantized theory, where one mode of the modes interacts with the atom through a single photon resonant process and the other is very far from resonance. The dynamic behavior of atomic level occupation is surveyed in an appropriate initial state of the quantum system.