Pockels-effect-based adiabatic frequency conversion in ultrahigh-$Q$ microresonators
Abstract
Adiabatic frequency conversion has some key advantages over nonlinear frequency conversion. No threshold and no phase-matching conditions need to be fulfilled. Moreover, it exhibits a conversion efficiency of down to the single-photon level. Adiabatic frequency conversion schemes in microresonators demonstrated so far suffer either from low quality factors of the employed resonators resulting in short photon lifetimes or small frequency shifts. Here, we present an adiabatic frequency conversion (AFC) scheme by employing the Pockels effect. We use a non-centrosymmetric ultrahigh- microresonator made out of lithium niobate. Frequency shifts of more than GHz are achieved by applying just V to -micrometer-thick crystal. Furthermore, we demonstrate that already with the same setup positive and a negative frequency chirps can be generated. With this method, by controlling the voltage applied to the crystal, almost arbitrary frequency shifts can be realized. The general advances in on-chip fabrication of lithium-niobate-based devices make it feasible to transfer the current apparatus onto a chip suitable for mass production.
Cite
@article{arxiv.1909.07958,
title = {Pockels-effect-based adiabatic frequency conversion in ultrahigh-$Q$ microresonators},
author = {Yannick Minet and Luís Reis and Jan Szabados and Christoph S. Werner and Hans Zappe and Karsten Buse and Ingo Breunig},
journal= {arXiv preprint arXiv:1909.07958},
year = {2020}
}
Comments
9 pages, 5 figures. Accepted manuscript, published in Optics Express. \copyright 2020 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved