Real-Time Decoding for Fault-Tolerant Quantum Computing: Progress, Challenges and Outlook

Understand

Quantum computing is poised to solve practically useful problems which are computationally intractable for classical supercomputers.

• However, the current generation of quantum computers are limited by errors that may only partially be mitigated by developing higher-quality qubits.
• Quantum error correction (QEC) will thus be necessary to ensure fault tolerance.
• QEC protects the logical information by cyclically measuring syndrome information about the errors.