Unified theory of consequences of spontaneous emission in aΛsystem
Unified theory of consequences of spontaneous emission in aΛsystem
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Λ系统中自发辐射后果的统一理论
DOI：
10.1103/physrevb.71.195327
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发表时间：
2005
影响因子：
3.7
通讯作者：
D. Steel
中科院分区：
文献类型：
--
作者：
S. Economou;Renbao Liu;L. Sham;D. Steel
在一个原子或量子点中具有两个近简并基态和一个激发态的λ系统中，自发辐射衰减可以导致一系列的现象，包括电子-光子纠缠、自发产生的相干性和双路径衰减。我们表明，作为一个单一的物理系统组成的三能级电子子系统和光子的量子演化的辐射衰变的治疗导致一系列的后果取决于电子-光子相互作用和测量。对发射光子的不同处理将电子-光子系统引导到各种最终状态。这一理论并不局限于三级系统。
In a $\Lambda$ system with two nearly degenerate ground states and one excited state in an atom or quantum dot, spontaneous radiative decay can lead to a range of phenomena, including electron-photon entanglement, spontaneously generated coherence, and two-pathway decay. We show that a treatment of the radiative decay as a quantum evolution of a single physical system composed of a three-level electron subsystem and photons leads to a range of consequences depending on the electron-photon interaction and the measurement. Different treatments of the emitted photon channel the electron-photon system into a variety of final states. The theory is not restricted to the three-level system.