Experimental Demonstration of a Terahertz Frequency Reference based on Coherent Population Trapping
Quantum Physics
2019-09-20 v2 Atomic Physics
Abstract
A novel protocol of interrogation based on coherent population trapping in an N-level scheme atomic system leads to dark resonances involving three different photons. An ensemble of several hundreds of radiofrequency-trapped ions is probed by three lasers simultaneously locked onto the same optical frequency comb, resulting in high-contrast spectral lines referenced to an atomic transition in the THz domain. We discuss the cause of uncertainties and limitations for this method and show that reaching a sub-kHz resolution is experimentally accessible via this interrogation protocole.
Keywords
Cite
@article{arxiv.1903.05386,
title = {Experimental Demonstration of a Terahertz Frequency Reference based on Coherent Population Trapping},
author = {Mathieu Collombon and Cyril Chatou and Gaétan Hagel and Jofre Pedregosa-Gutierrez and Marie Houssin and M. Knoop and Caroline Champenois},
journal= {arXiv preprint arXiv:1903.05386},
year = {2019}
}