Cryogenic resonator design for trapped ion experiments in Paul traps

TL;DR

This paper presents the design, production, and characterization of compact cryogenic resonators for Paul traps, demonstrating efficient impedance matching at cryogenic temperatures to improve ion trapping experiments.

Contribution

It introduces a practical guide for designing and producing low-loss, shielded cryogenic resonators tailored for ion trapping in cryogenic environments.

Findings

Three types of resonators were produced and characterized.

Efficient impedance matching was demonstrated at cryogenic temperatures.

The resonators showed low loss suitable for cryogenic ion trapping applications.

Abstract

Trapping ions in Paul traps requires high radio-frequency voltages, which are generated using resonators. When operating traps in a cryogenic environment, an in-vacuum resonator showing low loss is crucial to limit the thermal load to the cryostat. In this study, we present a guide for the design and production of compact, shielded cryogenic resonators. We produced and characterized three different types of resonators and furthermore demonstrate efficient impedance matching of these resonators at cryogenic temperatures.