# Trapped-ion quantum pulls ahead on logical qubits; Quantinuum bets on 2030
> Helios yields 94 logical qubits from 98 physical; Quantinuum accelerates fault-tolerance to 2030 and signs Mitsubishi; IonQ publishes a 'walking cat' blueprint

**Meta:** type: story · date: 2026-06-05 · heads: 長期戦, 静かな変化 · 10 takes · 3 lenses · 2 regions

## Summary

Trapped-ion quantum is winning the logical-qubit race even as superconducting leads on raw count. [Quantinuum's](/ja/entity/quantinuum) Helios system, 98 all-to-all connected physical qubits at 99.921% two-qubit fidelity, yielded **94 logical qubits** by March 2026 via efficient error-correction codes, and on 5 June Quantinuum unveiled an **accelerated roadmap to universal, fully fault-tolerant computing by 2030**, alongside a 2 June MoU with Mitsubishi Electric. Helios couples to [Nvidia](/ja/entity/nvidia) GB200 over NVQLink/CUDA-Q for real-time error correction, with Amgen, BMW, JPMorgan and SoftBank as launch customers. Rival [IonQ](/ja/entity/ionq) published an April fault-tolerance blueprint using "walking cat" codes and reports >99.99% two-qubit fidelity on ytterbium hardware. The gate remains error correction, not qubit headcount, the same logic as [IBM's](/ja/n/ibm-quantum-advantage-2026-push) superconducting push.

## By the numbers

- 94, logical qubits from Helios's 98 physical qubits (March 2026).
- 99.921%, Helios two-qubit gate fidelity (>99.99% claimed by IonQ).
- 2030, Quantinuum's accelerated universal fault-tolerance target.
- 5 / 2 June 2026, Quantinuum's roadmap announcement / Mitsubishi MoU.
- 4, Helios launch customers (Amgen, BMW, JPMorgan, SoftBank).

## Why it matters

Whoever first delivers many high-fidelity logical qubits, not just many physical ones, reaches commercially useful quantum first. Trapped ions' all-to-all connectivity and low error rates make them the efficiency leader; hybrid GPU coupling makes them deployable now. The 2030 target compresses a timeline most of the field still measures in decades.

## What to watch

- Independent verification of Helios's 94-logical-qubit claim and scaling beyond.
- IonQ moving its "walking cat" blueprint from paper to hardware.
- Whether trapped-ion clock speed (slower than superconducting) caps throughput.

## Regional takes (batched by bias / lens)

### unlabelled
- **Quantinuum (press release)** (United States, en) — Quantinuum's own 5 June 2026 announcement of an accelerated roadmap to universal, fully fault-tolerant quantum computing by 2030, the primary record for the target, building on the Helios trapped-ion system's logical-qubit gains.
  Source: https://www.quantinuum.com/press-releases/quantinuum-unveils-accelerated-roadmap-to-achieve-universal-fault-tolerant-quantum-computing-by-2030
- **HPCwire** (United States, en) — 
  Source: https://www.hpcwire.com/off-the-wire/quantinuum-announces-commercial-launch-of-new-helios-quantum-computer/
- **PR Newswire** (United States, en) — 
  Source: https://www.prnewswire.com/news-releases/quantinuum-announces-commercial-launch-of-new-helios-quantum-computer-that-offers-unprecedented-accuracy-to-enable-generative-quantum-ai-genqai-302607867.html
- **DatacenterDynamics** (United Kingdom, en) — 
  Source: https://www.datacenterdynamics.com/en/news/quantinuum-launches-helios-for-general-purpose-hybrid-quantum-workloads/
- **Quantinuum (Mitsubishi MoU)** (United States, en) — 
  Source: https://www.quantinuum.com/blog/quantinuum-nvidia-partnership
- **PostQuantum (IonQ roadmap)** (United States, en) — 
  Source: https://postquantum.com/industry-news/ionqroadmap-crqc/
- **Quantum Zeitgeist** (United Kingdom, en) — 
  Source: https://quantumzeitgeist.com/top-trapped-ion-quantum-computing-companies/
- **Business Weekly** (United Kingdom, en) — 
  Source: https://www.businessweekly.co.uk/posts/quantinuum-wows-the-world-with-helios-launch

### quantum-industry analysis
- **The Quantum Insider** (United States, en) — Surveys trapped-ion quantum as of June 2026, Quantinuum's Helios deriving 94 logical qubits from 98 physical via efficient codes, IonQ's April 'walking cat' fault-tolerance blueprint and >99.99% two-qubit fidelity, arguing trapped ions lead on qubit quality and error-correction efficiency even as superconducting leads on raw count.
  > "Trapped ions lead on qubit quality and error-correction efficiency: Helios yields 94 logical qubits from 98 physical; IonQ claims >99.99% two-qubit fidelity."
  Source: https://thequantuminsider.com/2026/06/12/trapped-ion-quantum-computing-companies-technology-and-where-it-stands-in-2026/

### specialist quantum trade tracker
- **Quantum Computing Report** (United States, en) — Documents the Helios launch, 98 all-to-all connected qubits, 99.921% two-qubit fidelity, NVIDIA GB200 coupling via NVQLink and CUDA-Q for real-time error correction, framing Quantinuum's strategy as quality-and-integration first, with commercial customers (Amgen, BMW, JPMorgan, SoftBank) already aboard.
  > "Helios: 98 all-to-all qubits at 99.921% two-qubit fidelity, coupled to NVIDIA GB200 via NVQLink for real-time error correction; Amgen, BMW and JPMorgan aboard."
  Source: https://quantumcomputingreport.com/quantinuum-launches-helios-quantum-computer-with-industry-leading-fidelity-and-singapore-partnership/

## Across the graph
- Related: [[ibm-quantum-advantage-2026-push]]
- Entities: Quantinuum, Ionq, Nvidia, Microsoft, United States

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Canonical: https://rbtfl.xyz/ja/n/trapped-ion-logical-qubits-2026