Quantum Computing roadmaps

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I want to make notes about the announcements done by main companies in this area, so I can review them in future.

The table below covers 10 listed quantum companies and the technical milestones they have publicly committed to for roughly Q4 2026 through 2029.

#Company (ticker)Late 2026202720282029+
1IonQ (IONQ)Combined IonQ and SkyWater 2026 revenue guidance of $450–460M. SkyWater is already producing “Superion” chips.First 256-qubit Superion customer deployments (early 2027).200,000-qubit QPUs (8,000 logical qubits) start functional testing.Roadmap to about 2M qubits by 2030.
2Rigetti (RGTI)108-qubit Cepheus-1 is generally available. The published roadmap targeted a 150+ qubit system at 99.7% fidelity by end of 2026, and the company says it will update the roadmap later this year.The 2025 roadmap targeted 1,000+ qubits at 99.8% fidelity by end of 2027. The Q2 2026 release describes about 1,000 qubits at about 99.9% fidelity and gates under 50 ns over roughly three years. HPE and Pittsburgh Supercomputing Center delivery is expected in 2027.Continued scaling toward the 1,000-qubit target.Up to $100M UK investment for system deployments.
3D-Wave (QBTS)17-physical-qubit gate-model system (logical error rate 2x lower than physical).49 physical qubits (20x error reduction).181 physical qubits (2,000x error reduction).20,000-qubit Advantage3 annealer (2029). 10 logical qubits (2030). 100,000-qubit annealer (2031). 100 logical qubits (2032).
4IBM (IBM)Kookaburra: first module combining qLDPC memory with a logical processing unit. Nighthawk runs 7,500-gate circuits on up to three 120-qubit modules.Cockatoo: entanglement between modules. Nighthawk improves to 15,000 gates on up to 1,080 qubits.Magic-state injection across multiple modules.Starling (2029): 200 logical qubits, 100M gates, in Poughkeepsie. Blue Jay (2,000 logical qubits, 1B ops) after 2033.
5Quantinuum (QNT)Helios (98 physical, 48 logical qubits) is being deployed.Sol: 192 physical and 100 logical qubits, 10⁻⁵ logical error rate, first 2D QCCD trap chip.Continued de-risking toward Apollo.Apollo (2029): thousands of physical and hundreds of logical qubits.
6Infleqtion (INFQ)30 entangled logical qubits on 80 physical qubits was announced Sept 24, 2026.Illinois neutral-atom system, modular to more than 50 logical qubits.100 logical qubits.1,000+ logical qubits by 2030.
7Xanadu (XNDU)Qubit Factory construction begins (2026–27). Photon-loss indicator at 24.1x.Qubit Factory build continues.Fault tolerance (2028–29).Up to 200 logical qubits (2029), 500 (2030), 1,000+ (2031). Quantum data center in 2029–30.
8IQM (IQMX)150-qubit Halocene commercially available by end of 2026. It targets 99.7% fidelity and up to 5 logical qubits. Munich system upgraded to 150 qubits.LUMI-IQ starts with a 150-qubit Halocene H4. 300-qubit system to VTT.Intermediate LUMI-IQ upgrade.Halocene H5 (2029): up to 9 logical qubits with lattice surgery and T-gates. Fault tolerance by 2030.
9Microsoft (MSFT)Majorana 2 was announced in June 2026. The published device roadmap moves from single-qubit devices to two-qubit braiding devices and then a 4×2 tetron array. That array is meant to show error detection on two logical qubits.No dated milestone.

Microsoft says it intends to build a fault-tolerant prototype topological system “in years, not decades” under DARPA’s US2QC program.		No dated milestone.The roadmap points to a 27×13 tetron array for quantum error correction, with no date. Majorana 1 is described as designed to scale to a million qubits on one chip.
10Alphabet / Google Quantum AI (GOOGL)Willow Early Access Program is moving quantum hardware to outside research partners. The stated next roadmap milestone is a long-lived logical qubit, with no date.No dated technical target.No dated technical target.Google has framed a useful, error-corrected quantum computer around 2029, with about a million physical qubits as the eventual scale. Willow currently has 105 physical qubits.

Source strictness: investor-relations sources only.

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