1. Key takeaways from the month
Between Sep 24 and Oct 23, 2026, quantum computing produced precise error-correction numbers, a government verification programme and large private cheques, but no machine that does useful work. Four conclusions on hardware, error correction, policy and commercialisation explain the month; each points to the chapter that holds the evidence, with status judged against Oct 24.
1. Error correction improved on paper, with one logical qubit behind the headline. Quantinuum's 98-qubit Helios reached 5 × 10⁻⁶ logical error per round at code distance 7, resting on 3 failures in 29,000 runs of 20 rounds; it is a preprint, not peer reviewed. Infleqtion's 30 logical qubits on 80 physical come from a company release with no logical error rate, and Quantinuum says its figure and Google's 99.99% magic-state fidelity measure different things. [Chapter 2][Chapter 3]
2. Speedups and cryptography estimates are projections. IonQ's "up to 74x" is 74.4x for logical Clifford gates on its larger code, evaluated for a design and not run on a machine. The material holds no new quantum advantage claim dated in the window, and Shor estimates (under 1 million noisy qubits for RSA-2048) predate it; 500,000 ÷ 98 ≈ 5,100 times the Helios qubit count. [Chapter 3]
3. Governments paid for verification and measured their own unreadiness. DARPA moved Atom Computing, Diraq, IBM and IonQ into Stage C on Oct 7, and the Department of War announced about $350M on Oct 8 (about $200M DARPA plus a conditional $150M PsiQuantum loan). GAO-27-108740 found none of 24 agencies fully prepared, with 89 recommendations; the OMB plan deadline of Oct 22 has passed, and filings are not confirmed. [Chapter 4]
4. Capital concentrated in a few names while revenue stayed small. Oratomic announced a $475M Series B ($775M since March), and IonQ priced a $2B equity offering and agreed to buy Elisity for up to $1.3B. Against that, Gartner estimates $869.9M of 2026 industry revenue, and IonQ, Rigetti and D-Wave reported Q2 revenue of $80.1M, $5.1M and $3.01M. [Chapter 5]
1.1 Milestones at a glance
| Company | Milestone | Metric | Date (2026) | Status (Oct 24) | Source |
|---|---|---|---|---|---|
| Quantinuum | Helios color-code memory (trapped ion) | 5 × 10⁻⁶ logical error per round, distance 7 | Oct 19 | Preprint, not peer reviewed | Quantinuum; PostQuantum |
| Infleqtion | Sqale logical qubits (neutral atom) | 30 logical on 80 physical qubits | Sep 24 | Company release; not independently verified | Infleqtion |
| Willow magic-state cultivation | 99.99% fidelity, about 40x fewer errors | Oct 15 | Science, per secondary report | Futurum | |
| IonQ | Scheduled qLDPC error correction | Up to 74.4x (Clifford), 5.0x (Toffoli) | Oct 6 | Projected; company blog and preprint | IonQ |
| DARPA | Quantum Benchmarking Initiative Stage C | Four firms join Microsoft and PsiQuantum | Oct 7 | Announced | DARPA |
| GAO | GAO-27-108740 | 0 of 24 agencies fully prepared; 89 recommendations | Oct 6 | Published | GAO |
| Department of War | Quantum package | About $350M (about $200M + about $150M loan) | Oct 8 | Announced; loan conditional | Dept. of War |
| Oratomic | Series B | $475M; $775M total since March | Oct 8 | Announced | Oratomic; Wilson Sonsini |
| IonQ | Equity offering | $2B | Oct 14 | Priced | 24/7 Wall St. |
2. Hardware milestones
Chapter 1 summarises the month; this chapter checks each hardware claim behind it for platform, metric and who has verified it, as of 2026-10-24.
2.1 Window milestones at a glance
| Item | Key figure | Date | Status and evidence | Source |
|---|---|---|---|---|
| Quantinuum Helios (trapped ion, 98 qubits) | 5 × 10⁻⁶ logical error per round | Oct 19 | Company release; preprint, not peer reviewed | Quantinuum; PostQuantum |
| Infleqtion Sqale (neutral atom) | 30 logical qubits from 80 physical | Sep 24 | Company release; no preprint in material | Infleqtion |
| Google Willow (superconducting, 105 qubits) | Magic state 99.99%, ~40x error cut | Oct 15 | Science, per secondary report | Futurum; Quantinuum |
| IonQ (trapped ion to memory) | >1,000 entanglements per second | Oct 9 | Company release; arXiv preprint | IonQ |
| DARPA QBI Stage C | 4 firms join Microsoft, PsiQuantum (6) | Oct 7 | Government release | DARPA |
Three window results measure three different things: logical memory error per round (Quantinuum), a logical-qubit count with a signal-over-noise check (Infleqtion), and the fidelity of a magic-state resource (Google). None can be ranked against another.
2.2 Trapped ions: Quantinuum's record, Google's different measure, IonQ's link
On Oct 19, 2026 Quantinuum (NASDAQ: QNT) announced that its Helios trapped-ion computer reached 99.9995% logical fidelity with a color code. The blog defines the metric: a logical failure probability of 5 × 10⁻⁶ per syndrome-extraction cycle at code distance 7, falling by an average 12x per step across distances 3, 5 and 7. "Five errors per million operations" therefore means per million rounds of a memory experiment, not per gate.
Helios has 98 qubits and the experiment encoded one logical qubit. The 23-author preprint was not peer reviewed at announcement. Error per round was 5.5 × 10⁻⁴, 3.8 × 10⁻⁵ and 5 × 10⁻⁶ at distances 3, 5 and 7; the last rests on three failures in 29,000 runs of 20 rounds, and 3 ÷ (29,000 × 20) ≈ 5.2 × 10⁻⁶.
The preprint coverage lists 13, 37 and 73 physical qubits (data plus measurement) at those distances, while the press release says "up to 37". The material does not reconcile them; we follow 73 for distance 7. Logical two-qubit Clifford gates are a separate metric: 7 × 10⁻⁴ (distance 3) and 7 × 10⁻⁵ (distance 5) against 9.5 × 10⁻⁴ unencoded, about 14x better (9.5 × 10⁻⁴ ÷ 7 × 10⁻⁵). Sandia's Robin Blume-Kohout, not a study author, called it "a logical qubit nearly 100x better than its component physical qubits". That is commentary, not independent verification.
The "100x lower than the best published result on other hardware" claim targets Google's 2024 result. The per-round metric ignores round length. A Helios round takes about 200 ms, while superconducting chips check about once per microsecond, roughly 200,000x faster (0.2 s ÷ 1 µs). The company's "30x fewer physical qubits" figure is an Apollo-scale projection, not a measurement.
Google's result measures something else. According to Futurum, Google Quantum AI published magic-state cultivation on the 105-qubit Willow in Science on Oct 15, cutting state-preparation error about 40x. Quantinuum's David Hayes gives 99.99% fidelity for a resource consumed by logical operations, not a logical computation. We have no Google primary source.
IonQ announced on Oct 9 an entanglement rate above 1,000 per second between a trapped-ion qubit and a silicon-vacancy memory, over 4x the prior trapped-ion record from Duke's Chris Monroe group, so that record was under 250 per second (1,000 ÷ 4). The Qubit Report adds 87.9% fidelity, absent from IonQ's text in our material and a link measure, not a gate fidelity.
2.3 Neutral atoms, and DARPA's Stage C checkpoint
Infleqtion (NYSE: INFQ) announced on Sep 24 that Sqale entangled 30 logical qubits on 80 physical, 10 blocks of 8 atoms, about 2.7 physical per logical (80 ÷ 30), in a circuit of about 1,000 physical operations. Evidence is a result roughly 1,000x above the uniform-random baseline; software loss correction raised retained samples 4x at a cost in accuracy. Quantum Computing Report adds four logical CCZ gates and an AI-found operation that cut a key entangling step from eight physical two-qubit gates to four.
No logical error rate, preprint or independent check appears in our material, so this is a company press release plus blog. Earlier counts were 2 (2024) and 12 (2025), a 2.5x step (30 ÷ 12). "First neutral-atom company at 30 logical qubits on a commercial system" is the company's wording. CEO Matt Kinsella cited 99.73% two-qubit gate fidelity in an Oct 21 interview that still calls 30 logical qubits a future goal, so it may predate the experiment.
DARPA announced on Oct 7 that Atom Computing, Diraq, IBM and IonQ advanced to Stage C of its Quantum Benchmarking Initiative, joining Microsoft and PsiQuantum. The test is whether any approach reaches "utility scale", value above cost, by 2033, moving "from plans to proof". Quantinuum, QuEra, Photonic Inc. and Xanadu were not named; absence is not rejection.
| Performer | Platform | Funding (PostQuantum) | Hardware claim |
|---|---|---|---|
| Atom Computing | Neutral atom | Up to $300M; initial not disclosed | Magne, >1,200 qubits, early 2027 |
| Diraq | Silicon spin | $51M initial, up to $300M | 8-qubit CMOS array |
| IBM | Superconducting | Not disclosed | Starling 2029: 200 logical qubits |
| IonQ | Trapped ion | Up to $300M through 2029 | Superion 256-qubit chips |
These are company targets or prior results, not Stage C measurements, and $300M is a ceiling, not an award. IBM's only window hardware item in our material is this selection.
Judgement: Quantinuum's evidence is strongest, with a defined metric, error bars, a code and a preprint. Infleqtion lacks an error rate; IonQ's and Google's need primary papers. Stage C is the first test not resting on company-reported numbers.
3. Error correction and algorithms
Chapter 2 covered the machines; this chapter asks what the window's error-correction and algorithm results show, and separates what was demonstrated from what is still projected.
| Item | Key figure | Date | Status | Source |
|---|---|---|---|---|
| Quantinuum Helios (trapped ion), color code, memory | 5×10⁻⁶ logical error per round, Λ = 12 | Oct 19 | Company release plus preprint, not peer reviewed, not independently verified | Quantinuum |
| Google Willow (superconducting), magic-state cultivation | 99.99% magic-state fidelity, ~40x fewer errors | Oct 15 | Peer reviewed (Science, per Futurum); figures via Quantinuum | Futurum; Quantinuum |
| IonQ qLDPC with scheduled error correction | Up to 74.4x (Clifford), 5.0x (Toffoli) | Oct 6 | Company blog plus arXiv preprint; projected | IonQ; QCR |
| Infleqtion Sqale (neutral atom) | 30 logical on 80 physical qubits | Sep 24 | Company release; hardware in Chapter 2 | Infleqtion; QCR |
| NVIDIA and Jülich, JUPITER | 104-qubit fault-tolerant simulation | Oct 19 | Company announcement; simulation | Futurum |
| Harvard cascade decoder (via QuEra) | ~20x lower logical error than belief propagation | Blog Oct 14 | Reported; result date not stated | QuEra |
| Google Kaggle circuit-compression competition | Three benchmarks, kickmix library | Oct 21 | Announced, open |
Demonstrated in the window was one trapped-ion logical qubit held for 20 rounds at distance 7. The 74x speedup, the 90% qubit saving and every Shor estimate are projections. The material has no new quantum advantage claim dated in the window.
3.1 Logical error rates: three different yardsticks
Quantinuum's Oct 19 release reports 99.9995% logical fidelity on the 98-qubit Helios. In metric terms that is a logical error per round of 5×10⁻⁶ for a triangular color code at distance 7 (73 physical qubits including measurement qubits). Distance 3 and 5 gave 5.5×10⁻⁴ and 3.8×10⁻⁵ (13 and 37 physical qubits). The steps are 14.5× and 7.6×, and the authors' fitted suppression factor is Λ = 12. The distance-7 figure rests on 3 failures in 29,000 runs of 20 rounds, so 3 ÷ 580,000 ≈ 5.2×10⁻⁶. The paper is a preprint, and decoding ran after the experiment with Google's Tesseract decoder, so it was not real-time. Logical two-qubit Clifford error was 7×10⁻⁴ at distance 3 and 7×10⁻⁵ at distance 5, against 9.5×10⁻⁴ unencoded; distance 7 was not run. An outside comment from Sandia's Robin Blume-Kohout is not verification.
Two cross-checks. At IEEE Quantum Week (Toronto, week of Sep 14, before the window) Quantinuum's CEO reported a Helios memory failing 4.6 times per 100,000 rounds. Then 4.6×10⁻⁵ ÷ 5×10⁻⁶ ≈ 9.2, consistent with the claimed 10x, though that report does not name the code (September's Helix, 10 physical qubits per logical qubit). Quantinuum's Sep 28 blog gives Helix a logical compute error of 2.8×10⁻⁴ against 8×10⁻⁴ physical and calls it 4.28x, but 8 ÷ 2.8 ≈ 2.9, so the baseline is unstated and we do not use 4.28x.
Quantinuum says its figure measures a logical computation and Google's 99.99% measures the preparation of a resource state, so they cannot be ranked. Its "100x lower than Google" is against Google's 2024 surface-code result, a different code and platform. Round times also differ: about 1 µs on superconducting chips against 200 ms quoted for Helios by Google's Craig Gidney, a factor of 200 ms ÷ 1 µs = 200,000. Gidney also estimated from the scaling that practical error rates need distance about 21. According to postquantum.com's analysis (estimate), holding Λ = 12 constant, 5×10⁻⁶ ÷ 12⁷ ≈ 1.4×10⁻¹³ at distance 21, needing 661 physical qubits per logical qubit; Λ = 2 would need distance 53 and 4,213.
Infleqtion's 30 logical qubits (80 atoms, 8:3 ratio, codes [[8,3,3]]/[[8,3,2]]) ran an IQP circuit of about 1,000 operations with four logical CCZ gates and a signal about 1,000x above random noise. These small codes have no per-round logical error rate, so they cannot be ranked against Helios.
3.2 IonQ's qLDPC speedup, decoders and software
IonQ's Oct 6 blog presents work by Mark Webster and Nicolas Delfosse (arXiv 2607.16166; the material gives no posting date, so the window item is the announcement). Joint measurement of commuting logical operators, steered by classical scheduler codes, plus a logical CliNR protocol, is compared with sequential measurements.
| Code (Quantum Computing Report table) | Logical Clifford | Logical Toffoli |
|---|---|---|
| Q70, 6 logical qubits | 18.5x | 4.2x |
| Q102, 22 logical qubits | 74.4x | 5.0x |
"Up to 74x" is the larger code on random Clifford circuits; the smaller code gives 74.4 ÷ 18.5 ≈ 4x less. QCR labels the joint-measurement gain (2.4x at L=10, 3.0x at L=20) "vs. Viterbi", while IonQ says "up to 3x" against sequential measurements; we follow IonQ's wording. The material does not say any of this ran on a machine; it is evaluated for IonQ's Walking Cat trapped-ion blueprint, so treat it as projected.
Decoding is the other bottleneck. A QCE26 guide dated Oct 20 covers 46 talks, mostly simulation or replayed data. IQM's sum is 10,000 logical qubits × 50 checks per µs = 500 Gbit/s. Maryland timed a full superconducting control loop at 446 ns with no qubits attached. Tokyo's sandwich decoder cut time per round from 186.7 to 122.1 ns, (186.7 − 122.1) ÷ 186.7 ≈ 35%, in simulation. Learned decoders ranked best in simulation did worse on IBM chips. In the window, QuEra's Oct 14 blog reported Harvard's cascade decoder at ~20x lower logical error than belief propagation near 1% physical error, with microsecond decoding; no paper status is given.
On software, PennyLane's Oct 13 post added ONNX-model decoders to Backline and ran NVIDIA's Ising pre-decoder on an AMD Instinct MI210 with PyMatching, online; no timings appear in the excerpt. Google's Oct 21 post launched a Kaggle competition on its kickmix library, which fuzz-tests circuits at 60 billion gates per second on one CPU core. NVIDIA's JUPITER run holds 2⁴⁵ ≈ 35.2 trillion amplitudes on 8,192 GH200 chips; its "90% fewer physical qubits" is the protocol's promise, not a measured result.
3.3 Advantage claims and resource estimates
No new advantage claim dated in the window appears in the material, only audits of older ones. On Jul 30 IBM and the University of Chicago announced a result they say meets the criteria; 16 days after the preprint, SUTD and NVIDIA computed exact probabilities for all 2,051 samples in 37.3 minutes on 256 GPUs (about 159 GPU-hours), and IBM has since revised the experiment. Google's 2024 random-circuit claim had no full classical reproduction as of Oct 5. At QCE26 (Sep 14, before the window) Google's Salvatore Mandrà said a classical run matched a 56-qubit Quantinuum H2 experiment in about two days on one A100 and exposed errors in its first data, later revised.
Shor estimates are older than the window and are secondary reports. Gidney's May 2025 paper puts RSA-2048 at under 1 million noisy qubits for under a week, against 20 million for 8 hours in 2019: 20 ÷ 1 = 20x fewer qubits. Google's March 2026 elliptic-curve paper uses fewer than 500,000 physical qubits, 18 or 23 minutes per key. Against the 98-qubit Helios, 500,000 ÷ 98 ≈ 5,100x. According to one explainer, IonQ's CEO claimed 2028 in September, which most researchers call optimistic.
4. National policy and investment
Chapter 3 set out what error-corrected machines have and have not shown; governments spent the window preparing for the day they work, and paying to find out whether they will.
| Item | Key figure | Date | Status | Source |
|---|---|---|---|---|
| GAO-27-108740 | 0 of 24 agencies fully prepared; 89 recommendations | Oct 6, 2026 | Published | GAO |
| EO 14412 (OMB plans due Oct 22) | Key establishment by Dec 31, 2030 | Signed Jun 22, 2026 | In effect | Technology.org |
| Department of War package | ~$350M (~$200M DARPA + ~$150M loan) | Oct 8, 2026 | Announced; loan conditional | Dept. of War |
| DOE Quantum Genesis | 8 priority problems; competition up to $215M | Oct 8; Sep 2026 | Announced | PostQuantum.com |
| UK/UKRI package | £78M | Date not stated | Announced | QCR |
| Horizon Europe QTI call | €20M | Closes Nov 17, 2026 | Open | EU Agenda |
4.1 The US audit and the post-quantum calendar
The US spent October measuring how unprepared its agencies are (none of 24 fully ready) and paying about $350 million to learn whether the machines will arrive.
GAO released GAO-27-108740 on Oct 6, 2026, a public version of a sensitive report issued in September 2025 and prepared with the Office of the National Cyber Director. It is a government audit, independent of the agencies it reviews. None of the 24 Chief Financial Officers Act agencies fully addressed three preparatory practices, because of gaps in cryptography expertise, in processes for inventories and funding, and in test plans. GAO made 89 recommendations to 23 agencies; 12 agreed, two partly agreed, seven neither agreed nor disagreed, and one disagreed with three of its four. It says most experts expect a cryptographically relevant quantum computer "possibly as soon as the 2030s", with wide uncertainty. For qubit estimates see Chapter 3.
According to Seimless, citing MeriTalk and FedScoop, one agency fully addressed inventory, 22 partly and one not at all (1 + 22 + 1 = 24); 21 had partial cost estimates and three none; no agency had tested post-quantum cryptography; and ONCD gave Congress roughly $7.1 billion. Seimless adds that scoring used 2022 guidance (OMB M-23-02) and that GAO reissued the report on Oct 14; GAO's own page shows Oct 6, which we follow.
The dated obligations behind the audit:
- OMB M-26-15 (Jun 24, 2026) gave agencies 120 days, which falls on Oct 22 (6 + 31 + 31 + 30 + 22 = 120). That date has passed; plans are not public, and the material does not confirm filings. Each plan needs nine elements, including inventory methods, crypto-agility and a third-party plan.
- EO 14412 (signed Jun 22) requires quantum-safe key establishment by Dec 31, 2030 and signatures by Dec 31, 2031, only for high-value assets and high-impact systems; the FAR Council's contractor rule is due about Dec 19, 2026 (180 days), and none had appeared by mid-October (according to Seimless).
- NSA CNSA 2.0 applies to new national-security-system purchases from Jan 1, 2027 (announced).
- EU roadmap: member states start by end-2026, high-risk uses by end-2030, and convert as much as feasible by 2035.
4.2 Washington's money: verification, manufacturing, applications
The Department of War announced on Oct 8, 2026 "approximately $350 million" in initiatives: about $200 million of new DARPA funding for Quantum Benchmarking Initiative (QBI) Stage C, on top of more than $650 million of earlier DARPA investment, and an Office of Strategic Capital conditional loan commitment of about $150 million to PsiQuantum (200 + 150 = 350). The loan would support a 140,000-square-foot manufacturing hub in Milpitas, California; final terms depend on financial, legal, technical and regulatory conditions. The Stage C selection itself (Oct 7) is covered in Chapter 2.
Do not multiply ceilings. DARPA lists up to $300 million per performer, and IonQ says its agreement runs to 2029, with later funding subject to appropriations. Four times $300 million would be $1.2 billion, against about $200 million announced. An even split would be about $50 million each (200 ÷ 4); QCR reports a $51 million initial Diraq tranche, but no source gives the split.
DARPA will also host application workshops with DOE's Office of Science, NNSA and the Laboratory for Physical Sciences, beginning before January 2027. On Oct 8, DOE named eight "Quantum Genesis Priority Applications" in chemistry, materials, subatomic physics and mathematics; its Q Competition, announced in September with up to $215 million planned, is separate from the $350 million. Both define questions, not results: neither shows quantum beating classical methods.
One item rests on weaker sourcing. According to Future Markets, a market-research vendor, Commerce signed nine letters of intent for $2.013 billion of CHIPS incentives with minority equity stakes, and Anderon finalised a $1 billion foundry award. Dates are not stated; only two awards appear elsewhere, Diraq's $38 million letter of intent and Infleqtion's $100 million contingent, "not a final award".
4.3 UK, EU and Australia: smaller sums, longer clocks
The UK announced a £78 million package (£50 million sensing, £20 million networking supply chain, £8 million apprentices; 50 + 20 + 8 = 78), plus a £17 million EPSRC call on quantum-AI-HPC integration closing in December 2026, with awards up to £3.75 million, under the £2 billion ten-year strategy (Quantum Computing Report; announcement date not stated). Most of it funds sensing and networking, not computers.
In the EU, a Horizon Europe call for a quantum testing infrastructure offers €20 million, about one grant of €19–20 million, closing Nov 17, 2026. A law firm reports the Commission is expected to present the EU Quantum Act on Nov 18; scope depends on the final text.
Australia's Department of Industry awarded $12.3 million (currency not stated) in stage-two Critical Technologies grants to six projects, reported by The Qubit Report.
Gap: the material holds no government programme or amount for China, Japan or India in this window.
The judgement: US money goes to verification and manufacturing, allies fund sensing, networking and testing, and the only fixed obligations are security deadlines.
5. Commercialisation and partnerships
Chapter 4 covered state money; this chapter follows the private and public capital that arrived in the same four weeks, and it shows that cash concentrated in a few names while revenue stayed small.
5.1 The window's deals at a glance
| Item | Key figure | Date (2026) | Status | Source |
|---|---|---|---|---|
| Oratomic Series B | $475M; total $775M since March | Oct 8 | Announced | Oratomic release; Wilson Sonsini |
| Universal Quantum Series A | >$100M; DCVC, Firgun co-led | Oct 8 | Announced | TNW |
| Qilimanjaro Series A, first close | €19.6M | Oct 14 | Announced; round open | Qilimanjaro |
| Korea Quantum Computing SPAC (Charlton Aria) | $80M equity value | Oct 7 | Announced, not closed | TNW |
| IonQ to buy Elisity | up to $1.3B, all stock | Oct 12 | Definitive agreement | Zacks (via Yahoo) |
| IonQ equity offering | $2B | Oct 14 | Priced | 24/7 Wall St. |
| Xanadu and GlobalFoundries | multi-year; terms not stated | Oct 6 | Announced | Xanadu |
| Quantinuum and UWA | MoU; Helios cloud access | Oct 5 | Signed | Quantinuum (via StockTitan) |
| Fujitsu and New Mexico | research centre; State pool $150M | Oct 9 | Exploratory | Fujitsu |
| Gartner revenue forecast | $869.9M (2026), $1.1B (2027) | Oct 8 | Estimate | TNW |
One startup took about 76% of the disclosed venture money, and one listed company raised about 3.2 times the whole venture total from the market, against a Gartner estimate of $869.9M for the whole industry's 2026 revenue.
Our tally of venture rounds the material names: Oratomic $475M + Universal Quantum $100M (a floor) + Qilimanjaro €19.6M (about $21.3M) + Qingxing about $14.9M + Quanfluence $10M + RhymeQ $2.2M = about $623M. Oratomic is 475 ÷ 623 ≈ 76%. IonQ's $2B is 2,000 ÷ 623 ≈ 3.2 times the sum. This is not a market total.
5.2 Venture rounds and partnerships
Oratomic (neutral atoms) announced on Oct 8 that it had raised $775M in total since launching in March 2026. ARCH, Spark Capital, Khosla, Index, General Catalyst and Bezos Expeditions led; Lowercarbon, Bain Capital, Formation and Nebular are also listed as backers. Funds go to staff, laboratories and systems. Its law firm states the Series B is $475M. The July Series A was $300M, and 300 + 475 = 775. The $5.4B valuation is reported by the Wall Street Journal, up from $1.5B: 5.4 ÷ 1.5 = 3.6 times in three months. WOWTALE says the company did not disclose it. We treat the valuation as reported. CEO Dolev Bluvstein told the Journal that about 10,000 qubits suffice, with a machine by 2030. That is a company claim, not verified (compare the estimates in Chapter 3).
Universal Quantum (trapped ions) raised more than $100M, which it calls the largest UK quantum Series A. EDBI and Roblox's Dave Baszucki joined; valuation and revenue were not shared. The money funds a Singapore centre and expansion in the US, Japan and Hamburg, alongside a $77M contract for Germany's DLR (date not stated). No UK public support went into the round.
Qilimanjaro closed €19.6M: Indra €10M through IndraMind plus €9.6M from Spain's state entity SETT, and 10 + 9.6 = 19.6. It expects to complete the round in Q4 2026 with Avançsa and existing investors, so the final size is open. The company reports 80 staff and eight systems deployed, three at the Barcelona Supercomputing Center.
Smaller items: Qingxing raised about ¥100M across two rounds (Sep 25 article), Quanfluence $10M and RhymeQ $2.2M (Oct 22). Korea Quantum Computing's $80M SPAC merger is tiny beside Quantinuum's June IPO ($1.68B raised).
Partnerships are announcements without prices. Xanadu (photonic) and GlobalFoundries will industrialise silicon-nitride photonics and single-photon detectors on a 300 mm line in Malta, New York. Quantinuum's UWA MoU gives cloud access to Helios. Terra Quantum joined the QuEra Quantum Alliance on Oct 15. NTT DOCOMO BUSINESS signed a Classiq MoU (date not stated). Fujitsu and New Mexico will "explore" a centre; the $150M belongs to the State, not Fujitsu. The only priced contract is DLR's $77M. We found no cloud or pharma deal with disclosed value in the window; D-Wave's renewals with AT&T, Nasdaq Verafin and Shionogi, among others, carry no value and were reported on Aug 6.
5.3 Public companies: revenue, bookings, dilution
The latest filings are Q2 2026, reported in August, before the window; Quantinuum's next report is due Nov 5.
| Company | Q2 2026 revenue | Cash, Jun 30 | Source |
|---|---|---|---|
| IonQ | $80.1M | about $3B (about $2B after SkyWater) | Motley Fool |
| Rigetti | $5.1M | about $541M | Motley Fool |
| D-Wave | $3.01M | $546.2M | FinanceFeeds |
D-Wave’s results give $3.01M (flat against $3.10M a year earlier; Motley Fool rounds to $3.1M). IonQ grew 287% in Q2; part of its growth is acquired. H1 operating cash burn was $254.8M, against $85.6M a year earlier. Guidance conflicts: $280-290M excluding SkyWater, per three sources, versus $450-460M including it, per Tickeron alone. We follow $280-290M. The $2B was sold below the market price to one buyer, in shares and pre-funded warrants, on top of 405.1M shares outstanding. Against the $13.92B market cap on Oct 16, $2B is about 14%, and Elisity's $1.3B (earnouts included) about 9%.
D-Wave: Q2 bookings were $2.1M, after $33.4M in Q1 (33.4 + 2.1 = 35.5, the H1 figure). Remaining obligations fell from $42.4M to $40.7M; cash is down about $42M in the quarter. Rigetti H1 revenue of $9.5M already exceeds 2025's $7.1M. IBM does not report quantum revenue; it cites over $1B of cumulative bookings, and its CEO said profit impact comes in 2028-29.
Quantinuum priced its IPO at $60 on Jun 4, raising $1.68B at about $15.6B (reported). It closed at $36.50 on Oct 23, market cap $9.697B: 36.5 ÷ 60 - 1 ≈ -39%. Trefis's $1.5B market cap on Oct 7 does not fit its own $43.98 price, so we ignore it. Morgan Stanley upgraded it to buy on Oct 15 (analyst view). Value divided by annualised latest-quarter revenue was about 52x for IonQ, 422x Quantinuum, 270x Rigetti and 540x D-Wave (New Market Pitch, as of its Sep 24 update, estimate).
6. How far from practical use
Chapters 2–5 gave the month's hardware, error-correction, policy and capital facts; this chapter turns them into a distance to practical use, using only those facts, and closes with a dated watch-list.
6.1 What the milestones show, and the size of the gap
The best demonstrated evidence is small. Helios held one logical qubit at distance 7 with 73 physical qubits and 5 × 10⁻⁶ error per round, from a preprint. Infleqtion entangled 30 logical qubits on 80 physical, but reports no logical error rate. Quantinuum, Google and Infleqtion measure different things, so none can be ranked.
The target is far larger. IQM's example of a useful machine holds 10,000 logical qubits; 10,000 ÷ 30 ≈ 333 times the largest logical count shown. For a Helios-type code, postquantum.com estimates 661 physical qubits per logical at distance 21 if the suppression factor stays at 12, and 4,213 if it falls to 2. Our arithmetic, an estimate, is 10,000 × 661 = 6.61 million physical qubits. Shor estimates sit lower: under 1 million noisy qubits for RSA-2048 and under 500,000 for elliptic curves, about 5,100 times the 98-qubit Helios (500,000 ÷ 98).
Speed and decoding add gaps. A Helios round takes about 200 ms against about 1 µs on superconducting chips, a factor of 200,000, and Helios decoding ran after the experiment, not in real time. The 446 ns superconducting control loop was timed with no qubits attached.
Roadmaps are claims, not measurements: IBM's Starling in 2029 with 200 logical qubits, Atom Computing's Magne in early 2027 with more than 1,200 qubits, and Oratomic's roughly 10,000-qubit machine by 2030. IonQ's 74.4x speedup is projected, and the material holds no new advantage claim dated in the window. DARPA's Stage C tests whether any approach reaches utility scale by 2033.
One logical qubit with a measured error rate, and 30 without one, stand against a useful machine of 10,000; the security deadlines arrive before the machines do.
6.2 What changed and what it means, by reader
| Reader | What changed | Implication | Evidence |
|---|---|---|---|
| Researchers | A defined per-round metric at distance 7 now exists for trapped ions; IonQ’s speedup is projected and Harvard’s decoder result has no stated paper status | Compare only like metrics (per round, per gate, magic-state fidelity); look for peer review, real-time decoding and error rates for logical-qubit counts | — |
| Security teams | GAO found 0 of 24 agencies fully prepared; the OMB plan deadline of Oct 22 passed with filings unconfirmed; the CRQC horizon is "possibly as soon as the 2030s" | Treat the 2030 and 2031 EO 14412 dates and Jan 1, 2027 CNSA 2.0 as the clock, not machine milestones | — |
| Investors | Oratomic $775M since March, IonQ $2B offering, Elisity up to $1.3B; Q2 revenue $80.1M, $5.1M, $3.01M; Quantinuum at $36.50 on Oct 23 against its $60 IPO (-39%) | Capital far exceeds revenue (Gartner estimate $869.9M for 2026); watch Quantinuum's Nov 5 report and guidance conflicts such as IonQ's | — |
| Programme managers | US money went to verification and manufacturing; allies funded sensing, networking and testing | Ceilings of up to $300M per performer are not awards; check what each programme measures | — |
6.3 Key dates
Dates already past on Oct 24, 2026 are marked "In effect"; later ones are "Upcoming". Years after 2026 are company or government targets.
| Date | Event | State on Oct 24, 2026 | Source |
|---|---|---|---|
| Sep 24, 2026 | Infleqtion announces 30 logical qubits on Sqale | In effect | Infleqtion |
| Oct 6, 2026 | GAO-27-108740 published | In effect | GAO |
| Oct 7, 2026 | DARPA names Stage C performers | In effect | DARPA |
| Oct 8, 2026 | Department of War announces about $350M | In effect | Dept. of War |
| Oct 19, 2026 | Quantinuum announces the Helios color-code result | In effect | Quantinuum |
| Oct 22, 2026 | OMB M-26-15 migration plans due (filings not confirmed) | In effect | Technology.org |
| Nov 5, 2026 | Quantinuum's next report due | Upcoming | Yahoo Finance |
| Nov 17, 2026 | Horizon Europe quantum testing call closes | Upcoming | EU Agenda |
| Nov 18, 2026 | EU Quantum Act proposal expected (reported) | Upcoming | Abreu Advogados |
| Dec 2026 | EPSRC quantum-AI-HPC call closes | Upcoming | QCR |
| About Dec 19, 2026 | FAR Council contractor rule due | Upcoming | Seimless |
| Jan 1, 2027 | NSA CNSA 2.0 applies to new national-security-system purchases | Upcoming | Technology.org |
| Early 2027 | Atom Computing's Magne, over 1,200 qubits (company target) | Upcoming | Russ Fein |
| 2029 | IBM Starling, 200 logical qubits (company target) | Upcoming | PostQuantum |
| Dec 31, 2030 | EO 14412 quantum-safe key establishment | Upcoming | Technology.org |
| 2033 | DARPA's utility-scale test horizon | Upcoming | DARPA |
7. References
This document draws on the following 63 sources, listed in the order they are first cited.
- Quantinuum Closes In on One Million Error-Free Operations — quantinuum.com
- Quantinuum Color Code on Helios: 12x Error Suppression — postquantum.com
- Infleqtion Achieves 30 Entangled Logical Qubits on Its Sqale Quantum Computer | Infleqtion — infleqtion.com
- Quantinuum and Google: Two Fault-Tolerance Results, Two Different Measures of Progress — quantinuum.com
- IonQ | Faster qLDPC: Up to 74x Speedup for Logical Gates | IonQ — ionq.com
- IonQ Demonstrates Scheduled qLDPC Error Correction to Accelerate Fault-Tolerant Gate Execution by up to 74x - Quantum Computing Report — quantumcomputingreport.com
- Quantum Advantage Claims: Four Questions to Ask — quantumexperts.com
- Will quantum computers break encryption? What's at risk | Secria — secria.me
- Four more teams enter Quantum Benchmarking Initiative’s final stage | DARPA — darpa.mil
- Department of War Announces $350 Million in Quantum Computing Initiatives > U.S. Department of War > Release | U.S. Department of War — war.gov
- GAO-27-108740, QUANTUM COMPUTING: Federal Actions Needed to Prepare for Emerging Cyber Threat — files.gao.gov
- Post-Quantum Cryptography Deadlines: What Is Due and When — technology.org
- Oratomic Raises $775 Million in Total Funding to Build Utility-Scale Fault-Tolerant Quantum Computers — finance.yahoo.com
- Wilson Sonsini Advises Oratomic on $475 Million Series B Financing | Wilson Sonsini — wsgr.com
- Quantum Computing Stocks Rebound After Dilution Scare: IonQ and Rigetti Climb 3%, D-Wave Advances 2% - 24/7 Wall St. — 247wallst.com
- 3 Quantum Computing Stocks in the Limelight After October Deals — finance.yahoo.com
- Oratomic reportedly hits $5.4bn as Gartner sees quantum revenue top $1bn — thenextweb.com
- Quantum Computing Is Still Years Away. These 6 Stocks Show Who Is Closest to Real Revenue. | The Motley Fool — fool.com
- D-Wave Q2: $3.01M Revenue, $2.1M Bookings, 7% Drop — financefeeds.com
- NVIDIA Simulates Fault-Tolerant Quantum at 104 Qubits — futurumgroup.com
- IonQ | IonQ Achieves Record 1 kHz Quantum Interconnect Speed — ionq.com
- Quantinuum Breaks Error-Correction World Record by 10x, Validating Its Leading Path to Fault-Tolerant Quantum Computing by 2029 — prnewswire.com
- Quantum Error Correction Decoders At IEEE Quantum Week 2026 — quantumzeitgeist.com
- Quantum Computing Weekly Round-Up: Week Ending October 10, 2026 — thequbitreport.com
- Quantum Computing Roadmap | Infleqtion — infleqtion.com
- Infleqtion Achieves 30 Entangled Logical Qubits on Sqale Neutral-Atom Quantum Processor - Quantum Computing Report — quantumcomputingreport.com
- The China-US Quantum Computing Contest – The Diplomat — thediplomat.com
- DARPA QBI Stage C: Four More Quantum Companies Advance — postquantum.com
- What is DARPA’s Quantum Benchmarking Initiative? — russfein.substack.com
- Quantinuum Breaks Error-Correction World Record by 10x, Validating its Leading Path to Fault-Tolerant Quantum Computing by 2029 — quantinuum.com
- Decoding the Decoders: Machine Learning and QEC — quera.com
- Announcing the verifiable quantum circuit compilation competition on Kaggle | Google Open Source Blog — opensource.googleblog.com
- Quantinuum Breaks Error-Correction World Record by 10x, Validating Its Leading Path to Fault-Tolerant Quantum Computing by 2029 — prnewswire.com
- Quantum World Congress 2026: Cutting Through the Noise to Deliver the Next Era of Compute — quantinuum.com
- Bring your own decoder: hierarchical QEC decoding with Backline, NVIDIA Ising, and PyMatching | PennyLane Blog — pennylane.ai
- Quantum Benchmarking At IEEE Quantum Week 2026, The Audit — quantumzeitgeist.com
- Monad | Monad's post-quantum roadmap — monad.xyz
- Q-Day: When Quantum Computers Break Encryption | Shujaatali Badami — shujaatalibadami.com
- Pentagon Announces $350M Quantum Computing Package — postquantum.com
- UK Government and UKRI Unveil £78M ($103.8M USD) Quantum Commercialization, Networking, and Skills Package - Quantum Computing Report — quantumcomputingreport.com
- Quantum-Testing Infrastructure for Quantum Technologies - EU Agenda — euagenda.eu
- PQC Migration Plan Deadline: What Vendors Must Know — seimless.com
- PQC Migration Tool for Algorithms and Deadlines — postquantum.com
- DARPA Selects Atom Computing, Diraq, IBM, and IonQ for Final Stage C Verification under Quantum Benchmarking Initiative - Quantum Computing Report — quantumcomputingreport.com
- The Global Quantum Technologies Market 2026-2036 - Advanced and Emerging Technology Market Research — futuremarketsinc.com
- Infleqtion Entangles 30 Logical Qubits On Sqale Computer — quantumzeitgeist.com
- European Commission prepares proposal for a regulation to boost quantum technologies in Europe — abreuadvogados.com
- Qilimanjaro Quantum Tech announces a nearly €20 million first close of its Series A, led by Indra Group - Qilimanjaro — qilimanjaro.tech
- Xanadu and GlobalFoundries Announce Strategic Partnership — globenewswire.com
- Quantinuum, UWA sign quantum computing partnership | QNT Stock News — stocktitan.net
- Fujitsu launches collaboration with State of New Mexico to establish quantum computing research center | Fujitsu Global — global.fujitsu
- Indra Bets on Qilimanjaro Quantum for Sovereign Deep Tech - EE Times — eetimes.com
- China’s Qingxing Raises Nearly 100 Million Yuan to Develop Quantum-Inspired AI — thequantuminsider.com
- RhymeQ Raises $2.2 Million To Make Coding for Quantum Computers Easy for Millions of Developers Worldwide — thequbitreport.com
- Neutral-Atom Quantum Computer Maker Oratomic Raises $475M Series B - WOWTALE — en.wowtale.net
- Quantinuum's IPO Valuation: $15.6B at Pricing — allium.so
- Terra Quantum Joins the QuEra Quantum Alliance, Adding ... — quera.com
- Quantinuum Inc. (QNT) Stock Price, News, Quote & History - Yahoo Finance — finance.yahoo.com
- IONQ vs QBTS: Weighing Two Quantum Computing Stocks — tickeron.com
- IonQ vs. Rigetti Computing: Which Quantum Computing Stock Is the Better Buy? | The Motley Fool — fool.com
- Quantinuum (QNT) | Trefis — trefis.com
- Quantinuum Stock Upgraded On Valuation Vs. Quantum Computing Stocks And Tech Roadmap | Investor's Business Daily — investors.com
- Top Quantum Computing Startups by Valuation (2026) – New Market Pitch — newmarketpitch.com