IBM unveils Loon and Nighthawk, next-generation processors for scalable, fault-tolerant quantum computing – SiliconANGLE

IBM unveils Loon and Nighthawk, next-generation processors for scalable, fault-tolerant quantum computing – SiliconANGLE

By @SiliconANGLE
Publication Date: 2025-11-12 16:35:00

At its annual Quantum Developer Conference, IBM Corp. today announced two new quantum processors aimed at delivering scalable quantum computation capabilities next year and fault-tolerant quantum computing by 2029.

IBM unveiled Quantum Nighthawk, a 120-qubit processor designed with 218 next-generation tunable couplers that expands on the previous generation Heron processor’s capabilities with 20% more couplers. According to the company, the increased connectivity between qubits allows users to execute circuits with 30% more complexity, while maintaining low error rates.

Qubits are the fundamental unit of logical information in a quantum computer, similar to a classical computer’s bit. Unlike classical bits, which can be a 0 or 1, qubits can be 0, 1 or a superposition of both at the same time. Using this property, quantum processors such as IBM’s Nighthawk can commit complex parallel calculations.

Tunable couplers push this even further by allowing pairs of qubits to…