Error Correction Zoo

Big update: the EC Zoo is now a handbook. It spans codes, sphere packings, lattices, designs, groups, and phases of matter. Extensively checked, but not perfect—feedback very welcome: arxiv.org/abs/2606.11484

We quantified how much closer OpenAI's improvement over MRRW brings us to GV lower bound: at most 2%. Gain over MRRW: at most ~1%.

And if you have an EC or QEC paper, consider getting an agent to push to the Zoo!

After extensive experiments with AI agents, the [72,36,16] extremal code remains elusive—and possibly more intractable than we expected. This isn’t your average Erdős puzzle; it’s full-stack math + compute. We’re opening the search to the community: take a shot. valbert4.github.io/selfdual_site/

The 14th International Workshop on Coding and Cryptography (WCC 2026) will be held June 8-12, 2026, in Paris, France. Event details and information can be found here: wcc2026.inria.fr

Here are videos and slides of my 6 hour overview of QEC, slightly updated from my @qip2025.bsky.social tutorial. Thanks goes to Kishor Bharti and Atul Arora for letting me give this at the Quantum Meets! www.youtube.com/playlist?lis... zenodo.org/records/1874...

Now with quotes!

Critiques of modern wireless communication theory by the giants, Viterbi and Gallagher. Also, a short introduction to the Shannon paradigm. rs-ojict.pubpub.org/pub/pw5st68m... rs-ojict.pubpub.org/pub/pg25jymv...

Check out a feature about the Zoo by Doraking, featuring Zootopia's Judy Hopps as the surface code! dev.to/doraking/qua...

Submissions are open for the 14th edition of the biannual Workshop on Coding and Cryptography (WCC) on June 8 to 12, 2026, at the @fondation-inria.bsky.social Research Center in Paris. wcc2026.inria.fr

"After all the manipulation, the qubits are read, collapsing their quantum state into either a zero or one. Bur there's a catch..." Nice @pbs.org documentary with epic animations. youtu.be/t06aTX9jM34?...

Quote by W. Wesley Peterson in a 1962 Scientific American article somewhat rings true today, except with "quantum" everywhere.

"For decades, experimental progress on QEC lagged far behind theory, but this is starting to change."

*Cooper fun fact: Cooper pairs are error detecting codes, a singlet and a space part that is a symmetric |k,-k>+|-k,k>

In closing of #qec2025, we have put up our 1000th code -- the [[8,3,2]] surface code on a cube (aka the Landahl plucky code)! It is a non-CSS code different from the smallest interesting color code. Stabilizer generators are X, Y, or Z strings on the faces. errorcorrectionzoo.org/c/cubic_surf...

Peter Shor receives a small gift on the 30th anniversary of his QEC paper at #QEC2025.

Artist Stewart Smith cools down the participant "qubits" to prepare for decoding the surface code at the QEC Choir interactive art exhibit at @qec2025 at the @yaleqi.bsky.social.

@mjbiercuk.bsky.social and Q-CTRL helping out the #qec2025 conference with performance boosters.

Tutorials begin at QEC2025 at @yaleqi.bsky.social. Here is an artistic rendition of some famous codes at the Google Quantum AI tutorial.

In our world of (noisy) data, error correction is everywhere, as Mary Wootters eloquently explains. www.quantamagazine.org/how-can-math...

We are now at 999 codes. What should be our 1000th? If we pick yours, we will feature you in a post about the code. Comment, reply, message, and spread the word.

Art, emotion, and quantum error correction news.yale.edu/2025/06/18/a...

Clean result on multi-block diagonal transversal gates by @fridaysimon.bsky.social and Shival Dasu that finally cracks open what prodigy Eric Rains was saying before many of us were born. arxiv.org/abs/2507.10519

We mourn the loss of one of the founders of the QEC (Knill-Laflamme) conditions and one of the first to write down the five qubit code (aka the Laflamme code). errorcorrectionzoo.org/c/stab_5_1_3

QEC2025 accepted talks out! qec25.yalepages.org/assets/image... @yaleqi.bsky.social

Ted Yoder summarised the onslaught of qLDPC logic papers (for fixed architectures) from IBM (and others). I’ve read most/some of these papers but had a few gaps remaining in my understanding before today …

📣 Call for Papers (EXTENDED DEADLINE!) 📣 The deadline for the IEEE BITS Special Issue on Error-Correcting Codes has now been extended by about two weeks. The new deadline for the 3-page "white paper" is now May 2, 2025: www.itsoc.org/sites/defaul...

Huge congratulations to my amazing student Yeyuan Chen (+co-author Zihan Zhang of OSU advised by Zeyu Guo) for being awarded the STOC 2025 Best Student Paper Award! Their monumental result proves that explicit Reed-Solomon codes can correct more errors than previously known: arxiv.org/abs/2408.15925

The submission deadline for the 2025 IEEE Information Theory Workshop has been extended to ⏰ April 21 AoE. Information Theorists: submit your work, come present it in beautiful #Sydney! www.ieee-itw2025.org/call-for-pap... #ITW25

"All learning is error correction." - @navalravikant.bsky.social

Slides from Daniel Gottesman's invited talk at the March Meeting, summarizing some latest work on Floquet and more general dynamical codes. www.cs.umd.edu/~dgottesm/Dy...

We’re excited to share updates ensuring the long-term sustainability of the EC Zoo. To continue delivering great content and improving your experience, we’re introducing a new subscription-based model. Check out our website for more detailed information!

Ben Reichardt summarizes leading platforms at the annual experimental talk @qip2025.bsky.social, this time given by a theorist.

Here are slides for my @qip2025.bsky.social tutorial on quantum error correction. doi.org/10.5281/zeno...