High finesse microcavities in the optical telecom O-band

Author(s)
Jan Fait, Stefan Putz, Georg Wachter, Johannes Schalko, Ulrich Schmid, Markus Arndt, Michael Trupke
Abstract

Optical microcavities allow to strongly confine light in small mode volumes and with long photon lifetimes. This confinement significantly enhances the interaction between light and matter inside the cavity, with applications such as optical trapping and cooling of nanoparticles, single-photon emission enhancement, quantum information processing, and sensing. For many applications, open resonators with direct access to the mode volume are necessary. Here we report on a scalable, open-access optical microcavity platform with mode volumes <30 $\lambda^3$ and finesse approaching $5x10^5$. This result significantly exceeds the highest optical enhancement factors achieved to date for Fabry-P\'erot cavities. The platform provides a building block for high-performance quantum devices relying on strong light-matter interaction.

Organisation(s)
Quantum Optics, Quantum Nanophysics and Quantum Information
External organisation(s)
Vienna Center for Quantum Science and Technology (VCQ), Czech Technical University in Prague (CTU), Technische Universität Wien
Journal
Applied Physics Letters
Volume
119
No. of pages
6
ISSN
0003-6951
DOI
https://doi.org/10.1063/5.0066620
Publication date
11-2021
Peer reviewed
Yes
Austrian Fields of Science 2012
103026 Quantum optics
Keywords
ASJC Scopus subject areas
Physics and Astronomy (miscellaneous)
Portal url
https://ucrisportal.univie.ac.at/en/publications/high-finesse-microcavities-in-the-optical-telecom-oband(cc958611-a60f-4e28-b4fc-3638f626b53b).html