Classical-Quantum Synergies in the Theory and Practice of Quantum Error Correction (Dagstuhl Seminar 24212)

The Dagstuhl Seminar 24212 "Classical-Quantum Synergies in the Theory and Practice of Quantum Error Correction" was held on May 20-23, 2024, and brought together 30 participants from 13 countries. The seminar served as an interaction forum for senior and talented junior researchers, crossing boundaries between classical and quantum coding theory, and related areas of quantum technology and engineering problems. The topics covered by the seminar ranged from models of quantum noise to the theory and practice of quantum codes, including fault-tolerant error correction and fault-tolerant quantum computation, quantum error correction for specific technology constraints or noise models, decoding aspects of topological and quantum LDPC codes, and quantum error correction for scalable modular quantum computing architectures. The two and a half day program of the seminar consisted of 14 invited talks, and five breakout sessions, aimed at fostering an exchange of knowledge and viewpoints on challenges faced by quantum error correction. This report briefly presents the background, the motivation, and the topics covered by the seminar, and provides an overview of the invited talks and of three of the breakout sessions that brought together a large number of participants.