Fiber ring resonator with nanofiber section for chiral cavity quantum electrodynamics and multimode strong coupling
arXiv:1611.01454 · doi:10.1364/OL.42.000085
Abstract
We experimentally realize an optical fiber ring resonator that includes a tapered section with subwavelength-diameter waist. In this section, the guided light exhibits a significant evanescent field which allows for efficient interfacing with optical emitters. A commercial tunable fiber beam splitter provides simple and robust coupling to the resonator. Key parameters of the resonator such as its out-coupling rate, free spectral range, and birefringence can be adjusted. Thanks to the low taper- and coupling-losses, the resonator exhibits an unloaded finesse of F=75+/-1, sufficient for reaching the regime of strong coupling for emitters placed in the evanescent field. The system is ideally suited for trapping ensembles of laser-cooled atoms along the nanofiber section. Based on measured parameters, we estimate that the system can serve as a platform for optical multimode strong coupling experiments. Finally, we discuss the possibilities of using the resonator for applications based on chiral quantum optics.
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- Chiral Quantum Optics
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- Chiral coupling of magnons in waveguides
- Fabry-Pérot Cavity Formed with Dielectric Metasurfaces in a Hollow-Core Fiber
- Cavity dark mode of distant coupled atom-cavity systems
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