Cari amici, This Wednesday, 10.4, at 11:00 in D1.14 I'll give an introductory talk on quantum error correction. It's a hot topic these days so I figured it would be good to know something about it. I've learned the basics and will go through them in this talk, focusing on examples of error correcting codes currently in use in today's quantum computers. Join us in person or online at https://meet.jit.si/CQISeminarTalks Warmly, Will Title: Quantum error correction 101 Rough outline: * Classical linear codes * Generator matrices and parity check matrices (ex. [3,1] repetition code) * Dual codes (ex. [7,4] Hamming code) * Quantum difficulties: no cloning, measurement, and continuous errors? * Stabilizer formalism * Stabilizers and normalizers (ex. [[3,1,1]] Bit flip code) * CSS codes (ex. [[7,1,3]] Steane code) * Surface codes (ex. [[25,1,5]] Toric code) * Color codes (ex. [[8,3,2]] Cubic code) * LDPC codes