2020/07/31 by S. K. Ruddell, Samuel K. Ruddell, Karen E. Webb +7 · 1 citation
Engineering · Physics and Astronomy · #Advanced Fiber Optic Sensors #Cavity quantum electrodynamics #Fabrication #Fiber #Finesse #Mechanical and Optical Resonators #Nanofiber #Nanolaser #Nanophotonics #Optical fiber #Quantum optics and atomic interactions #RADIUS #Whispering-gallery wave #physics.optics #quant-ph
paper · pdf · doi:10.1364/ol.396725
published as Optics Letters 45, 4875 (2020)
openalex publication_date 2020/07/31 · openalex created_date 2020/08/07 · arxiv created 2020/08/27 · arxiv updated 2020/08/31 · openalex updated_date 2026/08/05
We demonstrate the fabrication of ultra-low-loss, all-fiber Fabry-Perot cavities that contain a nanofiber section, optimized for cavity quantum electrodynamics. By continuously monitoring the finesse and fiber radius during the fabrication of a nanofiber between two fiber Bragg gratings, we were able to precisely evaluate taper transmission as a function of radius. The resulting cavities have an internal round-trip loss of only 0.31% at a nanofiber waist radius of 207 nm, with a total finesse of 1380, and a maximum expected internal cooperativity of ∼1050 for a cesium atom on the nanofiber surface. Our ability to fabricate such high-finesse nanofiber cavities may open the door for the realization of high-fidelity scalable quantum networks.