We consider the microwave-to-optical frequency conversion based on the Lamb shift, fine structure and forbidden transitions. The theory of such a conversion is developed and the efficiency of the microwave-to-optical frequency conversion is calculated. We show that the ratio of the peak power of the induced optical emission to the power of the incident microwave, for a hydrogen atom, can reach 1000000.
@article{arxiv.1806.07256,
title = {Microwave-to-optical frequency conversion based on the Lamb shift},
author = {Sergey A. Rashkovskiy},
journal= {arXiv preprint arXiv:1806.07256},
year = {2018}
}