Characterization of fluorescence collection optics integrated with a micro-fabricated surface electrode ion trap

Abstract

One of the outstanding challenges for ion trap quantum information processing is to accurately detect the states of many ions in a scalable fashion. In the particular case of surface traps, geometric constraints make imaging perpendicular to the surface appealing for light collection at multiple locations with minimal cross-talk. In this report we describe an experiment integrating Diffractive Optic Elements (DOE's) with surface electrode traps, connected through in-vacuum multi-mode fibers. The square DOE's reported here were all designed with solid angle collection efficiencies of 3.58%; with all losses included a detection efficiency of 0.388% (1.02% excluding the PMT loss) was measured with a single Ca+ ion. The presence of the DOE had minimal effect on the stability of the ion, both in temporal variation of stray electric fields and in motional heating rates.

6 pages, 8 figures

References in corpus (6)

• Trapped-ion probing of light-induced charging effects on dielectrics
• Simplified motional heating rate measurements of trapped ions
• High Speed, High Fidelity Detection of an Atomic Hyperfine Qubit
• Imaging trapped ions with a microfabricated lens for quantum information processing
• Efficient Fiber Optic Detection of Trapped Ion Fluorescence
• Controlling trapping potentials and stray electric fields in a microfabricated ion trap through design and compensation

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• Scalable ion-photon quantum interface based on integrated diffractive mirrors
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• Assembling a ring-shaped crystal in a microfabricated surface ion trap
• High-Fidelity Ion State Detection Using Trap-Integrated Avalanche Photodiodes
• Industrially Microfabricated Ion Trap with 1 eV Trap Depth
• Ion trap architectures and new directions
• Integrated photonic structures for photon-mediated entanglement of trapped ions
• Microelectromechanical-System-Based Design of a High-Finesse Fiber Cavity Integrated with an Ion Trap
• Modulating carrier and sideband coupling strengths in a standing wave gate beam
• A micro-optical module for multi-wavelength addressing of trapped ions
• An ion trap built with photonic crystal fibre technology