IBM plans to connect two quantum chips into 1,040-qubit system in 2027

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Published Wednesday, November 11, 2026 · 2:30 PM EST

IBM announced plans to connect two Nighthawk r3 chips into a 1,040-qubit quantum computer in 2027. Each chip is designed to run 10,000 quantum operations on 520 usable qubits and has 10 connectors for joining chips. The interconnection remains a technical constraint: IBM says it has linked earlier Nighthawk chips at 99.3% accuracy, below its 99.9% goal. The capacity and performance figures come from IBM and its partners; its first error-corrected quantum computer, Starling, is still targeted for 2029.

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