IQM Says Its Quantum Cloud Users Can Now Run on All 54 Qubits at Once

IQM Quantum Computers says it has linked all 54 qubits of its cloud-rented Emerald processor into a single entangled state, in which none acts alone. The company is the only source for that result: it published no paper with the announcement, and no outside group has checked its figures.

IQM says its cloud users can now draw on the whole chip in one computation, whereas until now a customer running a comparable demonstration on Emerald could reliably use on the order of 30 qubits inside a single algorithm. IQM made the claim in a press release dated Oct. 29, 2026, from Espoo, Finland.

Fidelity measures how close the prepared state came to a perfect one. By IQM's own measurement, it reached 0.515 across 40 qubits with no readout error mitigation, a correction applied after the qubits are measured, and 0.516 across all 54 qubits with that correction applied. The company puts the classical threshold separating genuine entanglement from noise at 0.500, and both of its numbers sit less than two hundredths above that line.

The test used a Greenberger-Horne-Zeilinger state, which IQM describes as a standard benchmark for large-scale entanglement, prepared across the whole processor. IQM credits an automated routine that chooses which operations to run and in what order, cutting the time qubits sit idle while the state is built, and says the result rests on roughly a year of hardware and calibration work by its technical teams.

"Entangling the entire chip means every qubit and every connection between them has to work correctly in the same circuit," said Craig Ciesla, IQM's chief technology officer. The company says the automated routine is part of a wider effort to automate the tuning of its quantum systems.