Ultra-low-loss nanofiber Fabry-Pérot cavities optimized for cavity quantum electrodynamics

Abstract

We demonstrate the fabrication of ultra-low-loss, all-fiber Fabry-Pérot cavities containing a nanofiber section, optimized for cavity quantum electrodynamics. By continuously monitoring the finesse and fiber radius during fabrication of a nanofiber between two fiber Bragg gratings, we are 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 $\sim$ 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.

References in corpus (14)

• The Quantum Internet
• An Elementary Quantum Network of Single Atoms in Optical Cavities
• Nanophotonic quantum phase switch with a single atom
• All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon
• Fiber Fabry-Perot cavity with high finesse
• A Quantum Gate between a Flying Optical Photon and a Single Trapped Atom
• Reversible state transfer between light and a single trapped atom
• Efficient routing of single photons by one atom and a microtoroidal cavity
• Nonlinear pi phase shift for single fiber-guided photons interacting with a single atom
• A Quantum Network Node with Crossed Optical Fibre Cavities
• Ultra-low-loss tapered optical fibers with minimal lengths
• Observation of dressed states of distant atoms with delocalized photons in coupled-cavities quantum electrodynamics
• Fiber ring resonator with nanofiber section for chiral cavity quantum electrodynamics and multimode strong coupling
• Cavity dark mode of distant coupled atom-cavity systems