Efficient Fiber Optic Detection of Trapped Ion Fluorescence

Abstract

Integration of fiber optics may play a critical role in the development of quantum information processors based on trapped ions and atoms by enabling scalable collection and delivery of light and coupling trapped ions to optical microcavities. We trap 24Mg+ ions in a surface-electrode Paul trap that includes an integrated optical fiber for detecting 280-nm fluorescence photons. The collection numerical aperture is 0.37 and total collection efficiency is 2.1 %. The ion can be positioned between 80 \mum and 100 \mum from the tip of the fiber by use of an adjustable rf-pseudopotential.

4 pages, 3 figures.

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• Heating and ion transport in a Y-junction surface-electrode trap
• A surface electrode point Paul trap
• Transparent ion trap with integrated photodetector
• Scalable ion-photon quantum interface based on integrated diffractive mirrors
• Surface-electrode ion trap with integrated light source
• An Integrated Mirror and Surface Ion Trap with a Tunable Trap Location
• A micro-optical module for multi-wavelength addressing of trapped ions
• Many-Body Physics with Trapped Ions
• High-Speed Low-Crosstalk Detection of a ${}^{171}$Yb${}^{+}$ Qubit using Superconducting Nanowire Single Photon Detectors