A public-private partnership in the Mountain West announced new results today that mark steady progress toward the Department of Energy’s goal of fault-tolerant quantum computing, systems large and reliable enough to solve complex problems.

Sandia National Laboratories, home to the DOE’s longest-running quantum computing program, and tech company Quantinuum published a paper today in Nature reporting the performance of the company’s 98-qubit commercial system, Helios, which debuted last year.

In operations that involved only one or two qubits, or quantum bits, the system demonstrated very high fidelity—99.9975% and 99.921%, respectively. The results establish Helios as the company’s largest and most reliable quantum computer to date.