Yang Yaping, Xu Jingping, Chen Hong, Zhu Shiyao
Department of Physics, Tongji University, Shanghai, China.
Phys Rev Lett. 2008 Feb 1;100(4):043601. doi: 10.1103/PhysRevLett.100.043601. Epub 2008 Jan 28.
The quantum interference between two spontaneous emission transitions, which are orthogonal, in a three-level system, can be greatly enhanced by using left-handed materials due to the focusing and phase compensation effects. The influence of the dispersion and dissipation of the materials on the quantum interference enhancement is investigated, and the enhancement of quantum interference is still significant. The quantum interference enhancement will result in a large quenching of the spontaneous emission, even if the distance between the materials and systems is larger than 10 wavelengths.
在一个三能级系统中，两个正交的自发发射跃迁之间的量子干涉，由于左手材料的聚焦和相位补偿效应，可以得到极大增强。研究了材料的色散和耗散对量子干涉增强的影响，结果表明量子干涉增强仍然显著。即使材料与系统之间的距离大于10个波长，量子干涉增强也会导致自发发射的大幅猝灭。
