Simplified motional heating rate measurements of trapped ions

Abstract

We have measured motional heating rates of trapped atomic ions, a factor that can influence multi-ion quantum logic gate fidelities. Two simplified techniques were developed for this purpose: one relies on Raman sideband detection implemented with a single laser source, while the second is even simpler and is based on time-resolved fluorescence detection during Doppler recooling. We applied these methods to determine heating rates in a microfrabricated surface-electrode trap made of gold on fused quartz, which traps ions 40 microns above its surface. Heating rates obtained from the two techniques were found to be in reasonable agreement. In addition, the trap gives rise to a heating rate of 300 plus or minus 30 per second for a motional frequency of 5.25 MHz, substantially below the trend observed in other traps.

References in corpus (2)

• A microfabricated surface-electrode ion trap for scalable quantum information processing
• Scaling and Suppression of Anomalous Quantum Decoherence in Ion Traps

Cited by in corpus (30)

• Quantum computing with trapped ions
• A compact ion-trap quantum computing demonstrator
• A trapped single ion inside a Bose-Einstein condensate
• Single ion-qubit exceeding one hour coherence time
• Ion traps with enhanced optical and physical access
• Observation of a quantum phase transition in the quantum Rabi model with a single trapped ion
• Temperature Dependence of Electric Field Noise Above Gold Surfaces
• Cold heteronuclear atom-ion collisions
• Fabrication and heating rate study of microscopic surface electrode ion traps
• Electrostatics of surface-electrode ion traps
• Fluorescence during Doppler cooling of a single trapped atom
• Measuring anomalous heating in a planar ion trap with variable ion-surface separation
• Heating and ion transport in a Y-junction surface-electrode trap
• Kelvin probe force microscopy of metallic surfaces used in Casimir force measurements
• Thermalization and temperature distribution in a driven ion chain
• Fast thermometry for trapped ions using dark resonances
• Electrostatic patch effects in Casimir force experiments performed in the sphere-plane geometry
• Experimental and theoretical challenges for the trapped electron quantum computer
• Blue-sky bifurcation of ion energies and the limits of neutral-gas sympathetic cooling of trapped ions
• Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity
• Electric-field noise from carbon-adatom diffusion on a Au(110) surface: first-principles calculations and experiments
• TSV-integrated Surface Electrode Ion Trap for Scalable Quantum Information Processing
• Ideal intersections for radio-frequency trap networks
• Noise from metallic surfaces -- effects of charge diffusion
• Ultracold ion-atom experiments: cooling, chemistry, and quantum effects
• Heating rate measurement and characterization of a prototype surface-electrode trap for optical frequency metrology
• Microfabrication techniques for trapped ion quantum information processing
• Ion counting and temperature determination of Coulomb-crystallized laser-cooled ions in traps using convolutional neural networks
• Electric Field Distortions in Surface Ion Traps with Integrated Nanophotonics
• Numerical modeling for trapped-ion thermometry using dark resonances