Quantum computing
Foundations and the state of play: what quantum hardware can and cannot do yet, and what would have to change for that to matter commercially.
Research sweeps
2026-04-18 · deep
Quantum Computing Advances - State of the Field 2025–2026
Quantum computing advances, quantum advantage benchmarks, real-world applications, and programming interfaces for business and consumer use - April 2025 to April 2026
Claude Opus 4.8- frontier
- academic
- vc
- +2
2026-04-19 · deep
Quantum Computing Foundations - A Briefing Note with Sources
Quantum computing fundamentals briefing - error correction, hardware architectures, computational advantage, and where the field stands - key papers, expert commentary, and lab progress from January 2023 to April 2026
Claude Opus 4.8- academic
- frontier
- blogs
Explainers
- Research Explainer · Nation (2025)
Seven quantum SDKs face the same benchmark, and only Qiskit clears the full transpilation suite
Benchpress runs 1,066 identical tests across BQSKit, Braket, Cirq, Qiskit, QTS, Staq and Tket on circuits up to 930 qubits, exposing two orders of magnitude in compile time and a wide gap in functional coverage.
- Research Explainer · IBM Quantum (2025)
IBM bets on bicycle codes for the first large-scale fault-tolerant quantum computer, and sets a date
Two new papers and a refreshed roadmap commit IBM to delivering Starling, a 200 logical qubit machine running 100 million gates, by 2029.
- Research Explainer · Bravyi (2024)
Quantum memory gets surface-code thresholds, but with a tenth of the qubits
Bravyi and colleagues introduce bivariate bicycle LDPC codes for fault-tolerant quantum memory. In simulations under a standard circuit noise model, the best small code reaches a pseudo-threshold near 0.7% and stores 12 logical qubits with 288 physical qubits, where a comparable surface-code layout would need nearly 3,000.