Quantum Hardware Database
IBM Condor
IBM Condor was the world's first quantum processor to exceed 1,000 qubits at the time of its announcement in late 2023. Part of IBM's aggressive processor roadmap, it represents a significant milestone in scaling superconducting qubit systems while maintaining reasonable gate fidelity across the full device.
Qubit Count
1,121
Qubit Type
Superconducting (transmon qubits)
Architecture
Heavy-hex lattice
Released
2023
Gate Error (2Q)
~0.1–0.3% per two-qubit gate (CNOT)
Coherence Time
T₁ ~300 µs, T₂ ~200 µs
Operating Temp
~15 millikelvin (inside dilution refrigerator)
Cloud Access
Yes — IBM Quantum (cloud.ibm.com)
Company
IBM
Connectivity
Heavy-hex — each qubit connects to 2 or 3 neighbors in a hexagonal pattern
Key Features
- 1,121 qubits — first processor to exceed 1,000
- Heavy-hex connectivity optimized to reduce error propagation
- Designed for error mitigation research and algorithm exploration at scale
- Fabricated using advanced semiconductor-compatible processes
Limitations
- High qubit count does not yet translate to full fault tolerance — physical error rates remain above the fault-tolerant threshold without error correction
- Coherence times limit circuit depth for complex algorithms
- Not all qubits equally connected — heavy-hex limits some gate combinations
Technical Notes
Condor uses IBM's 'heavy-hex' lattice topology, where qubits are arranged so each connects to at most 3 neighbors. This reduces the number of error pathways compared to a fully-connected grid, improving overall device reliability at scale.