A scheme for quantum-logic based transfer of accuracy in polarizability measurement for trapped ions using a moving optical lattice

TL;DR

This paper introduces a quantum-logic based measurement scheme that transfers polarizability measurement precision between ion species, reducing calibration challenges and enabling high-accuracy clock frequency shift corrections.

Contribution

A novel quantum-logic measurement method for transferring polarizability accuracy between ion species, bypassing laser power calibration limitations.

Findings

Enables direct polarizability transfer with high precision

Reduces calibration requirements for trapped ion clocks

References hydrogen-like ions for accurate polarizability calculations

Abstract

Optical atomic clocks based on trapped ions suffer from systematic frequency shifts of the clock transition due to interaction with blackbody radiation from the environment. These shifts can be compensated if the blackbody radiation spectrum and the differential dynamic polarizability is known to a sufficient precision. Here, we present a new measurement scheme, based on quantum logic that allows a direct transfer of precision for polarizability measurements from one species to the other. This measurement circumvents the necessity of calibrating laser power below the percent level, which is the limitation for state-of-the-art polarizability measurements in trapped ions. Furthermore, the presented technique allows to reference the polarizability transfer to hydrogen-like ions for which the polarizability can be calculated with high precision.