A 750 mW, continuous-wave, solid-state laser source at 313 nm for cooling and manipulating trapped 9Be+ ions

TL;DR

This paper reports a high-power, continuous-wave, solid-state laser system at 313 nm, enabling advanced quantum operations with trapped 9Be+ ions through efficient cooling, manipulation, and fault-tolerant gate implementation.

Contribution

The paper introduces the first narrow-linewidth, high-power laser system at 313 nm suitable for fault-tolerant quantum gates with 9Be+ ions.

Findings

Generated 750 mW at 313 nm for ion cooling and manipulation

Achieved tunability over 495 GHz covering key transitions

Demonstrated suitability for quantum-gate operations

Abstract

We present a solid-state laser system that generates 750 mW of continuous-wave single-frequency output at 313 nm. Sum-frequency generation with fiber lasers at 1550 nm and 1051 nm produces up to 2 W at 626 nm. This visible light is then converted to UV by cavity-enhanced second-harmonic generation. The laser output can be tuned over a 495 GHz range, which includes the 9Be+ laser cooling and repumping transitions. This is the first report of a narrow-linewidth laser system with sufficient power to perform fault-tolerant quantum-gate operations with trapped 9Be+ ions by use of stimulated Raman transitions.