Manipulation and Detection of a Trapped Yb+ Ion Hyperfine Qubit

TL;DR

This paper demonstrates high-fidelity manipulation and detection of a trapped ytterbium ion hyperfine qubit with long coherence times, advancing quantum information processing capabilities.

Contribution

It introduces a method for fast, efficient state preparation and detection of hyperfine qubits with extended coherence times in trapped Yb+ ions.

Findings

Achieved a coherence time of 2.5 seconds.

Demonstrated high-fidelity state detection and preparation.

Utilized stabilized and frequency-modulated lasers for improved performance.

Abstract

We demonstrate the use of trapped ytterbium ions as quantum bits for quantum information processing. We implement fast, efficient state preparation and state detection of the first-order magnetic field-insensitive hyperfine levels of 171Yb+, with a measured coherence time of 2.5 seconds. The high efficiency and high fidelity of these operations is accomplished through the stabilization and frequency modulation of relevant laser sources.