IBM Quantum
companyquantum-computingsuperconducting-qubitsqldpc-codesfault-toleranceibm
IBM Quantum
Type: Division of IBM (Armonk, NY)
IBM Quantum ships production superconducting quantum processors and is the industry's longest-running quantum program. November 2025 saw the Nighthawk (120 qubits, 5,000 two-qubit gates at launch) and the experimental Loon processor demonstrating every key component for fault tolerance. IBM's concrete roadmap: verified quantum advantage by end of 2026, large-scale fault tolerance by 2029.
Key Contributions
- Nighthawk processor — 120 qubits, 218 tunable couplers (+20% vs Heron), 30% more circuit complexity. (IBM)
- Loon experimental processor — demonstrates multi-layer routing + qubit reset for fault tolerance. (IBM)
- qLDPC real-time decoding in <480ns — 10× faster than prior art. (IBM)
- HPC-powered error mitigation — 100×+ cost reduction. (IBM)
- Qiskit dynamic circuits at 100+ qubit scale — 24% accuracy increase. (IBM)
- Published 2025–2029 roadmap — concrete public milestones, a rarity in the field. (IBM)
Key Dates
| Milestone | Target |
|---|---|
| Nighthawk delivery | End of 2025 |
| Verified quantum advantage | End of 2026 |
| Nighthawk+ (7,500 gates) | End of 2027 |
| 15,000 gates, 1,000+ qubits | 2028 |
| Fault-tolerant system | 2029 |
Mentioned In
- Logical Qubit Error Correction — superconducting + qLDPC approach
- Quantum Fault Tolerance Roadmap — primary roadmap anchor
Related Entities
- Quantinuum — parallel trapped-ion program