Probing surface charge densities on optical fibers with a trapped ion

Abstract

We describe a novel method to measure the surface charge densities on optical fibers placed in the vicinity of a trapped ion, where the ion itself acts as the probe. Surface charges distort the trapping potential, and when the fibers are displaced, the ion's equilibrium position and secular motional frequencies are altered. We measure the latter quantities for different positions of the fibers and compare these measurements to simulations in which unknown charge densities on the fibers are adjustable parameters. Values ranging from $-10$ to $+50$ e/$\mu$m${}^2$ were determined. Our results will benefit the design and simulation of miniaturized experimental systems combining ion traps and integrated optics, for example, in the fields of quantum computation, communication and metrology. Furthermore, our method can be applied to any setup in which a dielectric element can be displaced relative to a trapped charge-sensitive particle.

arXiv comment21 pages, 6 figures

References in corpus (27)

• Quantum computing with trapped ions
• Heating of trapped ions from the quantum ground state
• Fiber Fabry-Perot cavity with high finesse
• Ion-trap measurements of electric-field noise near surfaces
• Integrated optical addressing of an ion qubit
• Suppression of Heating Rates in Cryogenic Surface-Electrode Ion Traps
• Ion traps with enhanced optical and physical access
• Reduction of anomalous heating in an in-situ-cleaned ion trap
• Trapped-ion probing of light-induced charging effects on dielectrics
• A single ion coupled to an optical fiber cavity
• Fabrication and heating rate study of microscopic surface electrode ion traps
• Efficient Fiber Optic Detection of Trapped Ion Fluorescence
• Integrated Fiber-Mirror Ion Trap for Strong Ion-Cavity Coupling
• Cavity Quantum Electrodynamics with a Rydberg blocked atomic ensemble
• Microfabricated Ion Traps
• One-dimensional array of ion chains coupled to an optical cavity
• Sympathetic cooling and detection of a hot trapped ion by a cold one
• Transparent ion trap with integrated photodetector
• Cavity-induced anti-correlated photon emission rates of a single ion
• Wavelength-Scale Imaging of Trapped Ions using a Phase Fresnel lens
• Single-atom single-photon coupling facilitated by atomic-ensemble dark-state mechanisms
• Implications of surface noise for the motional coherence of trapped ions
• Ion trap architectures and new directions
• Segmented ion-trap fabrication using high precision stacked wafers
• A trapped-ion local field probe
• An Integrated Mirror and Surface Ion Trap with a Tunable Trap Location
• Feedback-Optimized Operations with Linear Ion Crystals

Cited by in corpus (11)

• Heating of a trapped ion induced by dielectric materials
• Industrially Microfabricated Ion Trap with 1 eV Trap Depth
• Third-order exceptional point in an ion-cavity system
• Numerical investigation of a segmented-blade ion trap with biasing rods
• How to integrate a miniature optical cavity in a linear ion trap: shielding dielectrics and trap symmetry
• Chiral-coupling-assisted refrigeration in trapped ions
• Precise and extensive characterization of an optical resonator for cavity-based quantum networks
• Compatibility of trapped ions and dielectrics at cryogenic temperatures
• Scalable chip-based 3D ion traps
• Electric Field Distortions in Surface Ion Traps with Integrated Nanophotonics
• Hybrid Trapping of Cold Atoms with Surface Forces and Blue-Detuned Evanescent Light on a Nanophotonic Waveguide