Oxford Ionics / IonQ Electronic Qubit Control

Track; not yet

Why

The four-nines fidelity result is genuine and peer-reviewable (arXiv:2510.17286), and the laser-free CMOS-fab approach is strategically distinctive, but every load-bearing performance number is a two-ion prototype figure and the 226 μs gate plus undemonstrated logical correction keep a cryptographically-relevant machine years out (analysts put Q-Day ~2030 mid-case). No pragma.vision workload needs trapped-ion compute today — this is a watch item for the post-quantum threat timeline (PQC migration already covers the hedge), not an adoption candidate. Readiness nudged 55->50 after verification: the 256-qubit 'selling today' claim is an order/demo claim, not a delivered benchmarked machine.

Next

Monitor for the 2026 256-qubit *demonstration* and, critically, an independently reproduced multi-qubit (>=20) full-system fidelity benchmark plus published per-round logical error rates before treating EQC as a credible near-term compute or crypto-threat substrate; re-check Q-Day estimator inputs (gate time, logical qubit count) at that milestone.