Quantinuum Error Correction Record Hits 99.9995% on Helios
Quantinuum's Helios hit 99.9995% logical memory fidelity, cutting errors about twelvefold per code-distance step and strengthening its 2029 Apollo roadmap.
Qubit Roadmap Milestones
Quantum computing companies publish roadmaps to show how they plan to move from today's noisy, experimental machines to systems that can solve useful problems. This hub tracks the milestones on those roadmaps and how well the hardware lives up to them.
Why it matters now
The field has shifted from simply adding more physical qubits to making qubits reliable. The milestones that matter most now involve quantum error correction: encoding information across many physical qubits to create logical qubits that can tolerate faults. Researchers are also working on related techniques, such as preparing the special "magic" states needed for a full set of quantum operations, at lower cost and with fewer errors.
Several major players now point to similar windows later this decade for reaching fault-tolerant capability. That timeline affects more than labs. Security standards bodies and IT teams are preparing to move away from today's public-key cryptography, and the pace of quantum hardware progress shapes how urgent that work is.
What you'll find here
- Error-correction results from superconducting, trapped-ion, and other qubit platforms
- Logical qubit demonstrations, including close looks at methods such as post-selection that can affect how impressive a result really is
- Vendor roadmap updates, showing where timelines move closer together, slip, or get revised
- New processors and test programs from established companies and emerging national efforts
- Post-quantum cryptography developments, including standards and deprecation schedules tied to expected quantum capability
Our coverage aims to separate real engineering progress from marketing, giving context on what each milestone shows and what problems remain unsolved.
Latest findings
Quantum X Labs Starts Error Correction Tests on Arbel Processor
Quantum X Labs began quantum error correction experiments on the Arbel processor at Israel's IQCC, run by Quantum Machines. Real-time QEC is still a future
Molecular Qubit Breakthrough Moves to HyperLight Photonic Chips
NVision published a Nature paper on a single-molecule spin-photon qubit and partnered with HyperLight to put molecular qubits on lithium niobate photonic chips.
NIST IR 8547 Final Deprecates All RSA and ECC Keys After 2030
NIST published its final IR 8547 on Oct. 27, 2026. RSA and ECC are now deprecated at every key size after 2030, then disallowed after 2035.
NIST Post-Quantum Roadmap Lands as Google Cuts Qubit Errors 40x
NIST released its final post-quantum migration roadmap, retiring RSA and ECC by 2035, as Google reported a 40-fold error cut in quantum fault tolerance.
Quantum Error Correction Tests Begin on Israel's Arbel Processor
Quantum X Labs began error correction experiments on the Arbel processor at Israel's IQCC. Real-time correction and fault tolerance are later goals.
Quantum X Labs Starts Error-Correction Trials on Arbel Processor
Quantum X Labs began error-correction experiments on IQCC's Arbel superconducting processor; it says real-time and fault-tolerant QEC are not yet demonstrated.
Quantinuum Helios Sets Error Correction Record at 99.9995%
Quantinuum's 98-qubit Helios hit 99.9995% logical fidelity, about five errors per million cycles: 10x its September record and 100x Google's published result.
Magic State Cultivation: Google Willow Cuts Errors 40-Fold
Google ran magic state cultivation on its Willow chip, cutting magic-state errors 40x at 99.99% fidelity and reviving debate over Bitcoin's Q-Day timeline.
Quantum Computing Roadmaps Converge on 2029 as Google Cuts Errors
Google cut magic-state errors 40-fold on Willow as IBM, Quantinuum and Microsoft aim for 2029 fault tolerance and US post-quantum crypto deadlines begin.
Google magic state cultivation on Willow cuts errors 40-fold
Google showed magic state cultivation working on its Willow chip, with 40x fewer errors and 99.99% fidelity. The result has restarted debate over Q-day
Google Willow Magic State Cultivation Cuts Quantum Errors 40-Fold
Google Quantum AI ran magic state cultivation on its Willow chip, cutting magic-state errors about 40x and reaching 99.99% T-state fidelity, per Science.
IBM 70 Logical Qubits: Post-Selection Behind the Advantage Claim
IBM and UChicago ran a 70-logical-qubit circuit on 97 physical qubits claiming verifiable advantage, but it relied on error detection and heavy post-selection.
Quantum Error Correction: IonQ Decoder Runs in Real Time on One CPU
IonQ says it has a real-time quantum error correction decoder running on one standard CPU, as new codes and roadmaps reduce the overhead of fault tolerance.
IonQ Quantum Interconnect Hits 1,000 Entanglements Per Second
IonQ linked a trapped-ion qubit to a silicon-vacancy quantum memory at over 1,000 entanglements per second, beating the prior trapped-ion record by 4x.
Quantum Error Correction Benchmark Puts Quantinuum Helios on Top
A Jülich study of 10 quantum processors found Quantinuum's Helios-1 handled error-correction operations best, up to 91 data qubits, beating IBM and IQM.
Quantum Computing Companies Shift Race to Logical Qubits in 2026
In 2026 the quantum race moved to logical qubits: IBM ran 70, QuEra and Quantinuum posted disputed counts, and the big roadmaps all aim at 2029.
Infleqtion Hits 30 Logical Qubits on Path to 1,000 by 2030
Infleqtion's 2025 neutral-atom redesign led to 30 logical qubits in 2026 as it targets 1,000 by 2030, but critics note the qubits rely on error detection.
Quantum Error Correction Overtakes Qubit Counts in 2026 Roadmaps
Google cut magic-state errors 40x on Willow, IonQ unveiled a single-CPU decoder, IBM's Kookaburra is pending and Rigetti pushed back its 1,000-qubit goal.
Quantum Race Heats Up: IBM, Google, D-Wave Chase Error Fixes
IBM, Google and D-Wave push quantum error-correction milestones as the industry shifts focus from qubit counts to logical qubit reliability.
Google 1000-Qubit Processor Claim Lacks Support; Willow Has 105
Reports of a Google 1,000-qubit processor lack support. Willow, with 105 qubits, is still Google's flagship, and error correction, not qubit count, is the real
Google Cloud Post-Quantum Roadmap Targets Full PQC Readiness by 2029
Google Cloud says it will be fully ready for post-quantum cryptography by 2029. Harvest-now protections are due in 2027, and signatures and identity in 2028.
Quantum Error Correction Race: DARPA Advances Four to Stage C
DARPA advanced IBM, IonQ, Atom Computing and Diraq to QBI Stage C amid new error-correction results, 2029 fault-tolerance roadmaps and 2030 PQC deadlines.
Post-Quantum Cryptography Joins US Critical Technology List
White House's August 2026 strategy cut the critical tech list to 14 areas, dropping data centers and batteries, adding post-quantum cryptography.
Quantum Error Correction Leaps Cut Qubits Needed to Crack RSA
Google and Caltech spinout Oratomic slashed qubit estimates for breaking encryption in early April 2026 as error-correction roadmaps sped up.
Quantum Computing IPOs: Quantinuum, Infleqtion Lift 2026 Guidance
Quantinuum and Infleqtion both raised their 2026 revenue outlooks in their first earnings as public companies, while their logical-qubit claims draw scrutiny.