What changed
IBM announced the Nighthawk r2 processor at the IBM Quantum Developer Conference 2026, marking its fastest processor to date. The Nighthawk r2 supports accurate circuits with more than 7,500 quantum operations on 120 programmable qubits and delivers up to 100,000 samples per second, a 25x gain over the previous Heron processor. The processor's square-lattice connectivity enables more complex circuits compared to classical methods.
What this means in practice
The Nighthawk r2 processor is designed to run frontier circuits efficiently, making them not only possible but also cost-effective. Users can access tutorials for running these circuits, including a 64-qubit ergodicity experiment and a 96-qubit classical shadows analysis. IBM reports that clients and partners have executed over 34 billion circuits on Nighthawk r2, with performance improvements of up to 19x compared to previous processors. The processor's high-speed qubit reset architecture and AI-driven tuning have enhanced device quality, improving high-error two-qubit gates by up to 7x.
Limitations and availability
The Nighthawk r2 is available for use through IBM Quantum Platform, with access to its error correction capabilities and co-design platforms like Oak Ridge National Laboratory's Umbra system. The processor is part of IBM's broader roadmap toward achieving quantum advantage and practical applications. IBM Quantum Starling, a fault-tolerant quantum computer, is planned for 2029 and will require further advancements in error correction and co-design of quantum and classical resources.
