Quantum computing in 2026: a crash course
A sourced crash course on quantum computing: qubits, error correction, logical qubits, advantage claims and who leads as of October 2026.
Quantum computing
Qubits, error correction and the race to build useful quantum computers.
Quantum computing frontier tracker
A dated, sourced timeline of quantum computing milestones: error correction, logical qubits, advantage claims and DARPA's benchmarking, 2024-2026.
DARPA Quantum Benchmarking Initiative (QBI)
Google Willow
IBM Quantum
Neutral-atom qubits
Quantinuum
Superconducting qubits
Surface code
Topological qubits
Trapped-ion qubits
Has quantum advantage arrived? The 2026 debate
How qubits work
Quantum error correction: from noisy to logical qubits
What quantum computers are good for (and what they are not)