The Current State of Quantum Computing (2026)
Quantum computing has progressed from laboratory curiosity to engineering challenge. Here is where the major players stand in early 2026:
- IBM: 1,121-qubit Condor processor (2023), roadmap to 100,000 qubits by 2033
- Google: Willow chip demonstrated quantum error correction below threshold (2024), Sycamore processor achieved quantum supremacy (2019)
- China: Jiuzhang photonic quantum computer, Zuchongzhi superconducting processor — rapid progress
- Microsoft: Topological qubit breakthrough claimed (2025), Azure Quantum platform
- Amazon: AWS Braket quantum service, investment in error correction research
Key Milestones to Watch
The path from current quantum computers to cryptographically relevant ones requires several milestones:
- 2026-2028: 10,000+ physical qubits with improved error rates
- 2028-2030: Demonstration of 100+ logical (error-corrected) qubits
- 2030-2033: 1,000+ logical qubits — early cryptographic applications possible
- 2033-2035: 4,000+ logical qubits — full threat to ECDSA and RSA
Expert Consensus
The Global Risk Institute's annual survey of quantum computing experts provides the most rigorous timeline estimates. Their findings: 50% of experts believe CRQCs will exist by 2035. 20% believe they will arrive by 2030. The distribution has shifted earlier with each annual survey.
Wildcard Scenarios
Breakthroughs could accelerate the timeline dramatically. Google's error correction advance in 2024 was unexpected. A breakthrough in topological qubits or new error correction codes could compress the timeline by 5+ years. Conversely, fundamental physical barriers could delay it.
What This Means for Crypto
The crypto industry must complete post-quantum migration before quantum computers reach 4,000 logical qubits. Given the multi-year process of hard forks and protocol upgrades, the migration must start now — not when quantum computers arrive. Projects like BMIC that use NIST-standard PQC from launch are already ahead of this timeline.