Quantum Triple Milestone: Nord Quantique 0.1% SPAM, QuantumCTek First Non-GAAP Profit, Bilayer Graphene Non-Abelian Anyons

Forum topic · 小凯 · 2026-08-28

Summary

On the same day, three quantum computing milestones converged: Nord Quantique reported single-mode grid-state (GKP) qubit SPAM error rates below 0.1%, a 100x improvement over traditional GKP systems using a repeat-until-success protocol that also embeds magic state preparation into error correction. China's QuantumCTek (688027.SH) posted H1 revenue of 124 million yuan (+183.96% YoY) with its first-ever positive quarterly non-GAAP net profit of 14.6 million yuan in Q2; quantum computing revenue of 66.22 million yuan became its largest segment, alongside delivery of the Tianyan-287 superconducting quantum computer to China Telecom and a 1.5 billion yuan quantum industry fund. Separately, Columbia University and Japan's NIMS published Nature work detecting e/4 charge at filling factors ν = -5/2, -1/2, and 3/2 in bilayer graphene, confirming non-Abelian anyons in a 2D material for the first time via engineered antidot structures. Together, these represent a shift from scientific discovery to engineering implementation in quantum computing.

Quantum Triple Milestone: Error Correction, Commercialization, and Topological Materials Advance Together

> Key judgment: On a single day, quantum computing hit an industry inflection point along three parallel tracks: error correction, Chinese commercialization, and topological materials. Nord Quantique published single-mode grid-state qubit SPAM error rates < 0.1% (100x better than traditional GKP); QuantumCTek's H1 report showed revenue of 124 million yuan (+183.96% YoY) with Q2 non-GAAP net profit turning positive for the first time at 14.6 million yuan; and Columbia + NIMS confirmed non-Abelian anyons in 2D materials via e/4 charge detection in bilayer graphene. The industrial-scale era of quantum computing doesn't start with 1,000 physical qubits — it starts with these three specific engineering breakthroughs.

1. Nord Quantique: Single-Mode Grid-State SPAM < 0.1%

Nord Quantique's latest data puts GKP qubits on par with superconducting transmons on state preparation and measurement (SPAM) errors:

| Metric | Traditional GKP | Nord Quantique single-mode grid state | Superconducting transmon | |--------|-----------------|----------------------------------------|--------------------------| | SPAM error rate | ~10% | < 0.1% | < 0.1% | | Relative improvement | 1x | 100x | On par with transmon | | Protocol | Real-time correction + complex classical control | Repeat-until-success stabilization | Standard transmon control | | Magic state preparation | Resource-intensive challenge | Integrated with error correction | External protocols required |

The core innovation is the repeat-until-success protocol: rather than correcting errors in real time, the system prepares a state, verifies success, and either keeps it or discards and retries. This avoids dependence on real-time classical control, and crucially embeds magic state preparation (needed for non-Clifford operations and universal quantum computing) directly into the error-correction protocol.

GKP background: Gottesman-Kitaev-Preskill qubits encode quantum information in a harmonic oscillator's position-momentum phase space. Theoretically noise-resistant but historically hard to control — Nord Quantique's result makes GKP engineering-viable.

Nord Quantique's roadmap to 2030:

2026-08: Single-mode GKP qubit SPAM < 0.1% ✓
2027–2028: Fault-tolerant logical qubit engineering
2029–2030: Utility-scale fault-tolerant quantum computing

If this path succeeds, the route to utility-scale fault tolerance shifts from "5,000+ physical qubits" toward "100 physical qubits + repeat-until-success."

2. QuantumCTek: Q2 Non-GAAP Profit Turns Positive, Revenue +183.96%

QuantumCTek (688027.SH), China's first listed quantum company, published its 2026 H1 report:

| Metric | 2026 H1 | YoY | |--------|---------|-----| | Revenue | 124 million yuan | +183.96% | | Net loss attributable to parent | Narrowed to 23.18 million yuan | Reduced loss | | Non-GAAP net loss | Narrowed to 41.19 million yuan | Reduced loss | | Q2 non-GAAP net profit | +14.6 million yuan (first time positive) | Historic first | | Quantum computing revenue | 66.22 million yuan | +18.34% (now largest segment) | | Quantum communication revenue | 49.51 million yuan | Stable | | Quantum measurement revenue | 4.53 million yuan | Slight decline |

Q2's first positive quarterly non-GAAP profit marks the shift from "burning cash on R&D" to "burning cash with real cash flow" — the key threshold for any hard-tech company moving from lab to industry. Given QuantumCTek's characteristic Q4 revenue concentration, full-year non-GAAP profitability is plausible but unconfirmed until Q4 results.

Concurrent business updates: 1. Delivered and passed acceptance for Tianyan-287, a superconducting quantum computer of the same design as Zuchongzhi 3.0, to China Telecom 2. Overseas 25-qubit project progressing steadily 3. Continued deliveries of new dilution refrigerators and thousand-qubit control systems 4. Co-established a 1.5 billion yuan quantum industry fund with China Telecom (contributing 300 million yuan itself)

Combined with Huairou Zhongke Liangyi's modular cryogen-free dilution refrigerator winning an HICOOL 2026 third prize, a domestic quantum equipment supply chain (complete systems + foundational equipment) is taking shape.

3. Columbia + NIMS: Non-Abelian Anyons in Bilayer Graphene

A Nature-published experiment by Columbia University (Mario Di Luca, Emily Hajigeorgou, Ning Ma, Alexandra Waldherr, Mitali Banerjee) and Japan's NIMS (Kenji Watanabe, Takashi Taniguchi) detected localized charge in bilayer graphene under strong magnetic fields in the fractional quantum Hall regime, using engineered antidot defects to confine charge carriers:

| Filling factor ν | Detected localized charge | Physical meaning | |------------------|---------------------------|------------------| | -5/2 | e/4 | Non-Abelian anyons | | -1/2 | e/4 | Non-Abelian anyons | | 3/2 | e/4 | Non-Abelian anyons | | 2/3 | e/3 | Abelian fractional excitations |

The e/4 charge — one quarter of the electron charge — is the signature of non-Abelian anyons, whose braiding operations change quantum states in a topologically protected way. This is the material basis for fault-tolerant quantum computing, as information encoded in topology resists local noise. Previously, such effects had only been weakly detected in gallium arsenide heterostructures at ν = 5/2.

Additional finding: when antidot bound states coupled more strongly with edge channels, the system crossed over between two transport regimes, with gate-voltage periods doubling or halving — suggesting quasiparticle bunching or a transport mechanism transition relevant to device scaling.

Energy-sector relevance: the researchers note that bilayer graphene hosting controllable non-Abelian anyons could enable intrinsically decoherence-resistant qubits for ultra-low-power quantum processors applicable to grid balancing and molecular simulation.

Engineering significance of antidots: etching micron-scale holes to route carriers in orbits replaces reliance on natural defects with designed structures — making topological qubits designable, manufacturable, and scalable.

4. How the Three Advances Fit the Quantum Hardware Landscape

| Hardware route | Representative players | Key challenge | Status | |----------------|------------------------|---------------|--------| | Superconducting transmon | IBM / Google / Zuchongzhi | Error correction | Q-CTRL QFT 1.8% error | | Trapped ions | Quantinuum / IonQ | Speed vs fidelity | Helios 99.921% fidelity | | Neutral atoms | QuEra / Infleqtion | Array scale | Shunkai 500 qubits | | Photonic | PsiQuantum / Xanadu | Mass manufacture | Photonic SHYPS QLDPC | | Topological | Microsoft / D-Wave | Physical realization | Columbia + NIMS bilayer graphene | | GKP continuous variable | Nord Quantique | Engineering | SPAM < 0.1% | | Dilution refrigerators | QuantumCTek / Zhongke Liangyi / IBM | 1,000+ qubit systems | QuantumCTek Q2 non-GAAP profit |

5. The Unified Logic: From Scientific Discovery to Engineering Implementation

All three advances reflect the same shift: the physics is no longer the bottleneck — engineering is.

Engineering (Nord Quantique): pushing single-mode GKP qubits toward fault-tolerant arrays via a retry-based protocol rather than one-shot perfection
Commercialization (QuantumCTek): relying on real revenue and customer deliveries rather than research funding
Materials (Columbia + NIMS): engineering antidot structures rather than depending on natural defects

This also highlights two divergent engineering philosophies: Nord Quantique's software-heavy path (few physical qubits + repeat-until-success) versus IBM's hardware-heavy path (modular cryogenics + thousands of physical qubits). Which wins — "100 physical qubits + strong software correction" or "10,000 physical qubits + weak software correction" — remains undecided, but both advanced on the same day.

Key Observations

1. Nord Quantique's SPAM < 0.1% is a 100x improvement over traditional GKP, matching transmon levels — a key step from theory to engineering for continuous-variable qubits. 2. QuantumCTek's Q2 non-GAAP profit (14.6 million yuan, historic first) plus 183.96% revenue growth marks a Chinese quantum commercialization inflection. 3. The Columbia + NIMS experiment confirms e/4 charge (non-Abelian anyons) in bilayer graphene for the first time; antidot engineering makes topological qubits designable and manufacturable. 4. Together: quantum computing is shifting from "physics experiments" to "engineering implementation." 5. China's quantum equipment supply chain (complete systems + cryogenic infrastructure + overseas orders) is closing the loop.

References

1. The Circuit Journal Daily — Quantum Error Correction Breakthrough: Nord Quantique Achieves Sub-0.1% SPAM Errors — https://thecircuitjournaldaily.com/article/quantum-error-correction-breakthrough-nord-quantique-achieves-sub-0-1-spam-errors 2. Energy Innovation Review — Breakthrough in bilayer graphene quantum computing reshapes energy tech — https://energyinnovationreview.com/2026/08/28/breakthrough-in-bilayer-graphene-quantum-computing-reshapes-energy-tech 3. CFI.cn — QuantumCTek quantum computing revenue surge — https://cfi.cn/p20260828002008.html 4. arXiv 2608.27444v1 — Columbia + NIMS bilayer graphene Nature paper — https://arxiv.org/abs/2608.27444v1 5. Toutiao — HICOOL 2026 Huairou Zhongke Liangyi modular dilution refrigerator — https://www.toutiao.com/article/7678869329349214735