Neutral-atom quantum computing firm Infleqtion said on September 24, 2026 that it has produced 30 fully entangled logical qubits on its Sqale quantum computer using only 80 physical atoms - one of the strongest single-shot demonstrations yet on a road toward fault-tolerant quantum machines.
Why 30 logical qubits matters
Logical qubits are error-corrected bundles of physical qubits that stay coherent longer than the noisy hardware underneath. Reaching 30 of them, all entangled in one coherent quantum state, is a milestone benchmark for fault-tolerance research: signal strength ran roughly 1,000 times stronger than the underlying noise, and the machine executed about 1,000 physical operations (a "KiloQuOp") without collapsing.
"Getting 30 logical qubits to work together is hard, and our team has done it," CEO Matt Kinsella said in the announcement. "Co-design between our hardware and software enabled this demonstration with just 80 physical qubits," a ratio that many fault-tolerance schemes assume would need thousands.
An AI-discovered gate
The crown-jewel technical claim is a new logical entangling operation discovered with the help of AI-assisted circuit search. Infleqtion CTO Pranav Gokhale said the operation performs a key logical gate "with half as many physical gates" than the standard design. "Every gate can introduce an error, so doing the same work with fewer gates matters as we build toward longer computations," Gokhale added.
Sqale itself combines individual qubit-addressing with dynamically reconfigurable atom arrays, giving Infleqtion all-to-all connectivity between qubits with minimal atom-movement noise. The demonstration builds on the company Superstaq software stack and its ongoing quantum-classical collaboration with NVIDIA CUDA-Q Logical toolchain.
Customers, partners and roadmap
Sqale is already running problem sets for the Wellcome Leap Quantum for Bio (Q4Bio) program, exploring quantum neural networks for biomarker discovery. Government users include the U.S. Department of War, NASA and the U.K. government. Infleqtion public roadmap now targets 100 logical qubits by 2028 and 1,000 by 2030.
The company neutral-atom camp has been racing all year: Pasqal debuted on Nasdaq in late August, and Japan switched on Infleqtion-powered Shunkai full-stack neutral-atom quantum computer the same week. Today 30-logical-qubit demo puts the pressure squarely back on trapped-ion and superconducting rivals to match the ratio at scale.
Reporting based on coverage from Infleqtion, The Quantum Insider and BusinessWire.