Error Control Begins to Shape Quantum Architectures: The overhead of error correction presents a serious challenge to scaling up quantum computing and may produce unexpected winners.

This article looks at error control in quantum computing. Quantum error correction, or error correction in quantum computing, needs to be able to account for errors occurring in the final state changes in quantum circuits. Due to the way qubits, quantum bits, work they are susceptible to unwanted changes in state making the error rate in quantum computing unacceptably high. Topics include a discussion of quantum gates and how they can be protected in error control, magic-process distillation, and necessary advances in quantum computing architecture to support quantum error correction.