Cryogenic ${}^9$Be${}^{+}$ Penning trap for precision measurements with (anti-)protons

Abstract

Cooling and detection schemes using laser cooling and methods of quantum logic can contribute to high precision CPT symmetry tests in the baryonic sector. This work introduces an experiment to sympathetically cool protons and antiprotons using the Coulomb interaction with a ${}^9$Be${}^{+}$ ion trapped in a nearby but separate potential well. We have designed and set up an apparatus to show such coupling between two identical ions for the first time in a Penning trap. In this paper, we present evidence for successful loading and Doppler cooling of clouds and single ions. Our coupling scheme has applications in a range of high-precision measurements in Penning traps and has the potential to substantially improve motional control in these experiments.

Corrected typos

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• Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons
• Isotope-Selective Laser Ablation Ion-Trap Loading of ${}^{137}{\mathrm{Ba}}^{+}$ using a ${\mathrm{BaCl}}_2$ Target
• 139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of ${}^9$Be${}^{+}$ ions in a Penning trap
• Measuring ion oscillations at the quantum level with fluorescence light
• Coupling two laser-cooled ions via a room-temperature conductor
• Indirect Cooling of Weakly Coupled Trapped-Ion Mechanical Oscillators
• BASE-STEP: A transportable antiproton reservoir for fundamental interaction studies
• Optical stimulated-Raman sideband spectroscopy of a single ${}^9$Be${}^{+}$ ion in a Penning trap
• Strong coherent ion-electron coupling using a wire data bus
• Ion-driven destabilization of a toroidal electron plasma -- A 3D3VPIC Simulation
• Compact atom source using fiber-based pulsed laser ablation
• Formation of Two-Ion Crystals by Injection from a Paul-Trap Source into a High-Magnetic-Field Penning Trap