The Quantum Investor's Notebook logo The Quantum Investor's Notebook

Calendar

Quantum Catalyst Calendar

Upcoming dates across quantum computing: company results, conferences, policy deadlines and the roadmap milestones companies have promised. Each entry links to its source and says whether the date is confirmed or estimated.

Last updated: Download the dated events (.ics, 18 events)

Confirmed announced by the company or organizerEstimated a data-vendor estimate, or a target stated only as a month, quarter, half or year

Next 60 days

Dated events from October 28, 2026 to December 27, 2026, in date order.

October 2026 3 events

  1. After market close

    ResultsAlphabet (Google Quantum AI)Confirmed

    Alphabet (Google Quantum AI) quarterly results

    Results for the quarter ending Sep 2026. Expected after market close.

    Source: nasdaq.com (Nasdaq/Zacks 'expected' date (company-announced))

  2. ConferenceD-Wave QuantumConfirmed

    Qubits Asia 2026, Seoul (D-Wave user conference)

    Full-day D-Wave user conference. CEO and CDO updates on annealing and gate-model technology. Presentation venue, not a delivery deadline.

    Source: dwavequantum.com (D-Wave press release, Sept 16, 2026)

  3. After market close

    ResultsMicrosoftConfirmed

    Microsoft quarterly results

    Results for the quarter ending Sep 2026. Expected after market close.

    Source: nasdaq.com (Nasdaq/Zacks 'expected' date (company-announced))

November 2026 10 events

  1. ResultsXanadu Quantum TechnologiesEstimated

    Xanadu Quantum Technologies quarterly results

    Results for the quarter ending Sep 2026.

    Source: nasdaq.com (Nasdaq/Zacks algorithmic estimate from past reporting dates; not announced by the company)

  2. ResultsIQM Quantum ComputersConfirmed

    IQM interim report, January to September 2026

    IQM's interim report for the nine months to September 30, 2026. It may include updates on revenue, the full-year outlook and 150-qubit system deliveries.

    Source: investors.iqm.tech (IQM stock exchange release, Oct 5, 2026; replaces the earlier Nov 3 date. Nasdaq/Zacks still shows an estimated Nov 3.)

  3. After market close, call 4:30 PM ET

    ResultsIonQConfirmed

    IonQ quarterly results

    Results for the quarter ending Sep 2026.

    Source: investors.ionq.com (Company release Oct 22, 2026: results after market close Nov 5, call 4:30 PM ET; rechecked Oct 28, 2026)

  4. After market close

    ResultsQuantinuumConfirmed

    Quantinuum quarterly results

    Results for the quarter ending Sep 2026. Expected after market close, with a conference call at 5:00 PM Eastern time.

    Source: ir.quantinuum.com (Quantinuum press release on PR Newswire, Oct 22, 2026; replaces the Nasdaq/Zacks estimate of Nov 10)

  5. After market close, call 4:30 PM ET

    ResultsQuantum Computing Inc.Confirmed

    Quantum Computing Inc. quarterly results

    Results for the quarter ending Sep 2026.

    Source: quantumcomputinginc.com (Company release Oct 26, 2026: results after market close Nov 9, call 4:30 PM ET)

  6. Before market open, webcast 8:00 AM ET

    ResultsD-Wave QuantumConfirmed

    D-Wave Quantum quarterly results

    Results for the quarter ending Sep 2026.

    Source: ir.dwavequantum.com (Company release Oct 27, 2026: results before market open Nov 10, webcast 8:00 AM ET)

  7. After market close, call 5:00 PM ET

    ResultsRigetti ComputingConfirmed

    Rigetti Computing quarterly results

    Results for the quarter ending Sep 2026.

    Source: globenewswire.com (Company release Oct 27, 2026 (GlobeNewswire): results after market close Nov 10, call 5:00 PM ET)

  8. ConferenceIBMConfirmed

    IBM Quantum Developer Conference 2026, Chicago

    IBM's annual developer conference, focused on quantum advantage tooling. IBM has used past editions for processor and roadmap updates.

    Source: ibm.com (IBM blog announcement)

  9. ResultsInfleqtionEstimated

    Infleqtion quarterly results

    Results for the quarter ending Sep 2026.

    Source: nasdaq.com (Nasdaq/Zacks algorithmic estimate from past reporting dates; not announced by the company)

  10. ConferenceIndustryConfirmed

    SC26 supercomputing conference, Chicago

    Main HPC conference. Quantum and HPC integration announcements are common here. Exhibits Nov 17 to 19.

    Source: sc26.supercomputing.org (Organizer site)

December 2026 2 events

  1. ResultsArqit QuantumEstimated

    Arqit Quantum quarterly results

    Results for the quarter ending Sep 2026.

    Source: nasdaq.com (Nasdaq/Zacks algorithmic estimate from past reporting dates; not announced by the company)

  2. ConferenceIndustryConfirmed

    Q2B26 x Chicago Quantum Summit

    QC Ware's Q2B, held in Chicago this year with the Chicago Quantum Exchange. Replaces the usual December Silicon Valley edition.

    Source: q2b.qcware.com (Organizer site)

Open promises

Roadmap milestones that companies have publicly targeted and that are not yet recorded as delivered, ordered by deadline. The deadline is the last day of the stated window, so a target of “2027” shows as December 31, 2027. Notebook tracking is a reading of the public evidence, not a forecast. Every tracked promise, including those already delivered, missed or changed, is in the Roadmap Promise Tracker.

2026 18 promises

  1. Deadline November 30, 2026

    Roadmap milestoneQuantum Computing Inc.EstimatedNotebook tracking: On track

    QCi Dirac-3S first customer shipment

    Upgrade with up to 9,980 variables with one expansion module (variables, not qubits).

    Source: quantumcomputinginc.com (Dirac-3S launch release, Oct 1, 2026)

  2. Deadline December 31, 2026

    Roadmap milestoneD-Wave QuantumEstimatedNotebook tracking: On track

    D-Wave 17-qubit dual-rail gate-model system (DR17)

    17 physical qubits with logical error rate 2x lower than physical, plus general availability, per the June 2026 gate-model roadmap.

    Source: dwavequantum.com (Investor Day roadmap, June 1, 2026)

  3. Deadline December 31, 2026

    Roadmap milestoneD-Wave QuantumEstimatedNotebook tracking: On track

    D-Wave Advantage2 installation at FAU

    $20M system sale; installation or deployment expected to begin before end of 2026.

    Source: sec.gov (FY2025 results, Feb 26, 2026)

  4. Deadline December 31, 2026

    Roadmap milestoneIBMEstimated

    IBM Kookaburra processor module

    First module storing information in qLDPC memory with an attached logical processing unit.

    Source: ibm.com (IBM roadmap blog, June 2025; not rechecked against later IBM roadmap updates)

  5. Deadline December 31, 2026

    Roadmap milestoneIBMEstimated

    IBM: quantum advantage by end of 2026

    IBM expects users to demonstrate quantum advantage by end of 2026, with quantum as an HPC accelerator.

    Source: ibm.com (IBM roadmap blog, June 2025; not rechecked against later IBM roadmap updates)

  6. Deadline December 31, 2026

    Roadmap milestoneIQM Quantum ComputersEstimatedNotebook tracking: Delayed

    IQM 150-qubit system for VTT Finland

    Moved from mid-2026 to late 2026; 300-qubit step still targeted for 2027.

    Source: iqm.tech (Update of Sept 9, 2026)

  7. Deadline December 31, 2026

    Roadmap milestoneIQM Quantum ComputersEstimatedNotebook tracking: Unclear

    IQM Euro-Q-Exa 150-qubit stage at LRZ

    Second stage of the Euro-Q-Exa system at LRZ.

    Source: iqm.tech (Contract announced Oct 16, 2024)

  8. Deadline December 31, 2026

    Roadmap milestoneIQM Quantum ComputersEstimatedNotebook tracking: On track

    IQM first Halocene 150-qubit error-correction system

    150 physical qubits, target 99.7% 2Q fidelity, QEC stack, up to 5 logical-qubit research.

    Source: iqm.tech (Halocene launch, Nov 13, 2025)

  9. Deadline December 31, 2026

    Roadmap milestoneInfleqtionEstimatedNotebook tracking: Mixed

    Infleqtion 2026 roadmap bundle

    30+ logical qubits, 4,000 physical qubits, 99.90% gate performance and a hardware error-correction milestone. Infleqtion reported a 30-logical-qubit result on Sept 24; no public result yet for the qubit-count and gate targets.

    Source: infleqtion.com (September 2025 roadmap)

  10. Deadline December 31, 2026

    Roadmap milestoneIonQEstimatedNotebook tracking: At risk

    IonQ 2026 fault-tolerant system targets

    Superion 256: 100 to 256+ physical qubits, 99.99% physical fidelity, 12 logical qubits, logical error state below 1E-7, mid-circuit measurement.

    Source: ionq.com (Company roadmap target year 2026; live roadmap rechecked 2026-10-07)

  11. Deadline December 31, 2026

    Roadmap milestoneIonQEstimatedNotebook tracking: Open

    IonQ Superion 256 integrated-system validation

    Investor Day timeline lists integrated-system validation, dynamic circuits with mid-circuit measurement, production start and cloud early access as next steps after first-ion trapping.

    Source: s28.q4cdn.com (Q3 to Q4 2026 system integration per IonQ Q2 2026 investor update, Aug 5, 2026; timeline repeated at Investor Day, Sept 8, 2026)

  12. Deadline December 31, 2026

    Roadmap milestonePasqalEstimatedNotebook tracking: On track

    Pasqal Orion Gamma generation (140 to 200+ qubits)

    2026 product generation in the 2025 roadmap.

    Source: 2025 roadmap (no public link on file)

  13. Deadline December 31, 2026

    Roadmap milestoneQuantum Computing Inc.EstimatedNotebook tracking: Unclear

    QCi 2026 product targets (wafer-scale TFLN, compact vibrometer)

    Wafer-scale TFLN process development and field-deployable compact vibrometer, both dated 2026 in the October deck.

    Source: sec.gov (October 2026 investor deck, slide 13)

  14. Deadline December 31, 2026

    Roadmap milestoneQuantum Computing Inc.EstimatedNotebook tracking: On track

    QCi NeuraWave units to Planck Dynamics

    Five ordered NeuraWave photonic-AI units; shipment and acceptance not yet verified.

    Source: quantumcomputinginc.com (Roadmap phase 2024 to 2026)

  15. Deadline December 31, 2026

    Roadmap milestoneRigetti ComputingEstimatedNotebook tracking: Unclear

    Rigetti 108Q on-premises system at C-DAC Bengaluru

    January 2026 purchase order; installation window H2 2026.

    Source: sec.gov (Aug 6, 2026 Form 10-Q)

  16. Deadline December 31, 2026

    Roadmap milestoneRigetti ComputingEstimatedNotebook tracking: At risk

    Rigetti Cepheus-1-108Q at about 99.5% median 2Q fidelity

    Last matched public value about 99.1%. Target set at the April 2026 108Q launch for later 2026.

    Source: sec.gov (108Q GA release, Apr 7, 2026)

  17. Deadline December 31, 2026

    Roadmap milestoneRigetti ComputingEstimatedNotebook tracking: Open

    Rigetti technology roadmap update

    Rigetti said in April 2026 that it would update its technology roadmap later in the year, including milestones and their timing.

    Source: sec.gov (Company said a roadmap update would come later in 2026)

  18. Deadline December 31, 2026

    Roadmap milestoneXanadu Quantum TechnologiesEstimatedNotebook tracking: Unclear

    Xanadu 2026 optical-loss checkpoint (24.1x)

    Aggregate loss gap forecast of 24.1x for 2026 under the August 2026 metric framework.

    Source: investors.xanadu.ai (Roadmap release, Aug 31, 2026)

2027 12 promises

  1. Deadline June 30, 2027

    Roadmap milestoneIonQEstimatedNotebook tracking: On schedule, not delivered

    IonQ first Superion 256 customer deliveries

    First pre-sold Superion 256 unit. Investor Day language: customer deliveries in early 2027, prior Q1 to Q2 2027 commissioning window.

    Source: ionq.com (Investor Day, Sept 8, 2026)

  2. Deadline June 30, 2027

    Roadmap milestoneQuantum Computing Inc.EstimatedNotebook tracking: Unclear

    QCi QKD endpoint authentication (PUF/ZKP)

    Commercial authentication product for QKD endpoints.

    Source: sec.gov (October 2026 investor deck, slide 13)

  3. Deadline December 31, 2027

    Roadmap milestoneD-Wave QuantumEstimatedNotebook tracking: Unclear

    D-Wave 49-qubit dual-rail system (DR49)

    49 physical qubits, expected 20x error reduction, general availability.

    Source: dwavequantum.com (Gate-model roadmap, June 1, 2026)

  4. Deadline December 31, 2027

    Roadmap milestoneIBMEstimated

    IBM Cockatoo

    Entanglement between modules via universal adapters.

    Source: ibm.com (IBM roadmap blog, June 2025; not rechecked against later IBM roadmap updates)

  5. Deadline December 31, 2027

    Roadmap milestoneIQM Quantum ComputersEstimatedNotebook tracking: Open

    IQM 300-qubit system for VTT

    Second VTT stage.

    Source: vttresearch.com (VTT announcement, May 20, 2025)

  6. Deadline December 31, 2027

    Roadmap milestoneInfleqtionEstimatedNotebook tracking: On track

    Infleqtion Illinois fault-tolerant system

    More than 50 logical qubits initially, modular path to 100.

    Source: ir.infleqtion.com (Illinois deployment announcement, Jul 22, 2026)

  7. Deadline December 31, 2027

    Roadmap milestoneIonQEstimatedNotebook tracking: At risk

    IonQ 10,000 physical / 800 logical qubits

    Superion 10K target. Company says full fault tolerance in a 2027 lab setting, manufacturable commercial system in 2028.

    Source: ionq.com (Company roadmap target year 2027)

  8. Deadline December 31, 2027

    Roadmap milestoneIonQEstimatedNotebook tracking: Planned

    IonQ Superion installation at NVIDIA NVAQC

    Planned Superion deployment at NVIDIA's accelerated quantum research center.

    Source: ionq.com (Company-announced plan for 2027)

  9. Deadline December 31, 2027

    Roadmap milestoneIonQEstimatedNotebook tracking: Planned

    IonQ Superion system at FIU

    FIU says late 2027; depends on completion of FIU's data center.

    Source: ionq.com (FIU announcement: late 2027)

  10. Deadline December 31, 2027

    Roadmap milestonePasqalEstimatedNotebook tracking: On track

    Pasqal Vela and about 20 logical qubits

    Vela, first quantum-advantage product, and about 20 logical qubits around 2027.

    Source: pasqal.com (2025 roadmap and 2026 investor materials)

  11. Deadline December 31, 2027

    Roadmap milestoneQuantinuumEstimatedNotebook tracking: On track

    Quantinuum Sol, first full 2D-grid system

    Hundreds of physical qubits, 2Q error below 2E-4, about 2x Helios speed; later refined to about 100 logical qubits near 99.999% logical fidelity.

    Source: sec.gov (2024 roadmap, refined in 2026 prospectus)

  12. Deadline December 31, 2027

    Roadmap milestoneXanadu Quantum TechnologiesEstimatedNotebook tracking: On track

    Xanadu Qubit Factory build

    Manufacturing build window 2026 to 2027.

    Source: investors.xanadu.ai (Roadmap release, Aug 31, 2026)

2028 2 promises

  1. Deadline December 31, 2028

    Roadmap milestoneIonQEstimatedNotebook tracking: Unclear

    IonQ 20,000 physical / 1,600 logical qubits

    Roadmap scale step; Investor Day resource estimate for secp256k1 used 19,397 physical / 1,457 logical qubits.

    Source: ionq.com (Company roadmap target year 2028)

  2. Deadline December 31, 2028

    Roadmap milestonePasqalEstimatedNotebook tracking: Changed

    Pasqal 10,000 physical qubits

    Originally 2026; current registration material says 2028, investor material frames 10,000+ by 2029.

    Source: sec.gov (September 2026 registration material)

2029 6 promises

  1. Deadline December 31, 2029

    Roadmap milestoneD-Wave QuantumEstimatedNotebook tracking: On track

    D-Wave Advantage3 20,000-qubit annealer

    Intermediate Advantage3 scale step.

    Source: dwavequantum.com (Q2 2026 results)

  2. Deadline December 31, 2029

    Roadmap milestoneIBMEstimated

    IBM Starling fault-tolerant system

    200 logical qubits, 100 million gates, Poughkeepsie. Proof of concept with magic-state injection in 2028.

    Source: ibm.com (IBM roadmap blog, June 2025; not rechecked against later IBM roadmap updates)

  3. Deadline December 31, 2029

    Roadmap milestoneMicrosoftEstimated

    Microsoft scalable, commercially valuable quantum computer

    Target restated with Majorana 2 in June 2026.

    Source: news.microsoft.com (Microsoft Majorana 2 announcement, June 2, 2026)

  4. Deadline December 31, 2029

    Roadmap milestoneQuantinuumEstimatedNotebook tracking: On track

    Quantinuum Apollo, universal fault-tolerant system

    Thousands of physical qubits, hundreds of logical qubits, logical error below 1E-6.

    Source: sec.gov (2024 roadmap; 2029 date clarified in 2025 and 2026 disclosures)

  5. Deadline December 31, 2029

    Roadmap milestoneRigetti ComputingEstimatedNotebook tracking: Unclear

    Rigetti quantum-advantage-capable system

    About 1,000 qubits, about 99.9% 2Q fidelity, gates under 50 ns. Framed as roughly three years from 2026.

    Source: sec.gov (Q2 2026 results, Aug 6, 2026 (also Q1 2026 slides); year is an estimate from 'roughly three years')

  6. Deadline December 31, 2029

    Roadmap milestoneXanadu Quantum TechnologiesEstimatedNotebook tracking: Changed

    Xanadu fault-tolerant operation

    Widened from 2028 to 2028 to 2029.

    Source: investors.xanadu.ai (Roadmap release, Aug 31, 2026)