Tag
#fault tolerance
2 articles
- State of Quantum Computing: Mid-2026 Edition
Five hardware platforms. Four NIST cryptographic standards. Two contested quantum advantage claims. One below-threshold error correction milestone. Seven years after the NISQ era began, quantum computing is at an inflection point. Here is a precise, unsentimental account of where every major platform stands, what has been proved, what remains unproven, and what the next decade realistically looks like.
- Fixing Broken Qubits: How the Surface Code Makes Fault-Tolerant Quantum Computing Possible
Every qubit in a quantum processor makes mistakes — not sometimes, but continuously. Quantum error correction doesn't prevent errors; it encodes logical qubits redundantly across many physical ones so that errors can be detected and corrected without ever directly measuring the quantum state. Here is how the surface code achieves this, what the overhead actually costs, and why Google's 2023 demonstration changed the field.
