# Chip-Scale Laser Achieves 99.6% Qubit Fidelity - Date: 2026-03-30 - Category: Quantum Computing The Nature Communications paper hit 99.6% qubit fidelity using a chip-scale laser instead of rooms of vibration-isolated optics. The “shrink quantum computers” framing is the press release talking, not the physics. The paper shows one laser on one ion. ---