IonQ Advances Quantum Computing With Superion 256: What's Ahead?

IonQ IONQ has launched Superion 256, its sixth-generation quantum computing platform and the foundation for future compute products. The platform has moved from early design to trapping ions in under a year, with IonQ fabricating its first fully integrated 256-qubit quantum processing units (QPUs) at its SkyWater subsidiary. The company has also trapped the first ions in prototype Superion 256 systems, which are being built simultaneously at multiple U.S. facilities.

IonQ and SkyWater jointly designed and fabricated the chip, completing six tapeouts in the first half of 2026. Working with SkyWater's quantum foundry, IonQ cut its design cycle to two months from nine months. The teams also delivered 12 times more wafer lots over six months than they did at a previous foundry.

At the core of Superion 256 is IonQ's Electronic Qubit Control ("EQC"), which controls trapped-ion qubits with electronics integrated directly into the chip rather than with laser systems. The underlying qubit control is manufactured using standard semiconductor processes. The chip uses the same EQC technology that IonQ used to achieve a 99.99% two-qubit gate fidelity world record in October 2025.

Designed for data center deployment, the system fits a standard server rack without requiring a bespoke buildout. It also uses less power than a rack of GPUs, while its cooling system is suited to typical data center environments.