IBM has revealed plans for the Nighthawk r3, an upcoming quantum processor that will pack 520 qubits when it launches in 2027, according to a report published this week by The Register. The new chip represents another milestone in the company's push toward a fault-tolerant quantum computer it aims to deliver in 2029. Big Blue plans to connect two of the processors together to create a single system exceeding 1,000 qubits.
The Nighthawk r3 will carry more than four times the quantum bits of its predecessor, the Nighthawk r2, which arrived in September with 120 qubits capable of running circuits with 7,500 operations. The upcoming processor will handle 10,000 quantum operations while keeping the same speed and accuracy, the report states. When two Nighthawk r3 chips are linked, they'll form a 1,040-qubit system using 10 chip-to-chip connectors called l-couplers. IBM's longer-term target is Starling, a quantum processor slated for 2029 that's designed to run quantum circuits with 100 million quantum operations across 200 logical qubits, establishing what the company calls the world's first fault-tolerant quantum computer.
According to the report, IBM says applications increasingly need circuits that execute thousands of quantum operations on roughly 100 qubits or more, which speeds up the gathering of millions or billions of samples required for complicated calculations. The company explained that processing speed determines whether such intensive workloads can finish within practical time periods and at reasonable expense. IBM laid out plans for Starling in a 2025 paper that described hardware for implementing bivariate bicycle quantum low-density parity check error correction codes, which sharply cut the number of physical qubits required to store and process quantum information compared to current surface codes.
The report notes that fault-tolerant quantum technology has consistently seemed at least a decade away despite repeated advances, though some industry observers believe the timeline may be shortening given rising activity around quantum-resistant encryption algorithms. IBM is preparing by combining its quantum processors with classical high-performance computing systems to research better error correction. Oak Ridge National Laboratory recently announced a setup that pairs an IBM Quantum System Two containing Nighthawk r2 processors with Umbra, powered by AMD 5th Gen Epyc CPUs and Instinct MI355X GPU accelerators. The company also has a partnership with Japan's RIKEN research institute that integrates an IBM Quantum System Two with the Fugaku Arm-based supercomputer.
The Starling architecture will assemble modules that each hold a quantum memory and logical processing unit, allowing logic operations on the memory, with universal adapters enabling connections through l-couplers. The report highlights skepticism in the field, citing a University of Auckland professor who claimed last year that quantum computers haven't factored any number larger than 21 without shortcuts. Still, IBM's roadmap suggests commercial quantum computing may shift from perpetual promise to near-term reality as hardware capabilities and error correction converge. Organizations weighing quantum investments face a familiar calculus: commit resources to unproven technology now, or risk falling behind if the breakthrough finally arrives on schedule.