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

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

We are living in exciting times. Starting today, the zoo will be completely redone by AI! errorcorrectionzoo.org/__41ai

The forward-looking Oratomic time-efficient architecture claims to "potentially enable runtimes of 10 days for ECC–256 with ≈26,000 qubits, and 97 days for RSA–2048 with ≈102,000." This is based on stitching together several gadgets and plausibly assuming they can work together on an atom platform.

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

Peter Shor: we haven't found many new quantum algorithms, in part, because we need larger quantum devices for testing our heuristics. He gives several examples of algorithms that were discovered computationally, including turbo codes, @fermilab.bsky.social quantum symposium by the SQMS center.

"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?...

Big-picture analysis from @awscloud, warning about the currently slow clock speed of quantum computers. arxiv.org/abs/2510.26078

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...

Important slide comparing magic-state cultivation to distillation by @craiggidney.bsky.social @qip2025.bsky.social.

@fridaysimon.bsky.social made a long-needed database of small quantum codes numbering in the 10s of thousands. qecdb.org/codes/

This is the miracle octad generator (MOG) of Conway and Curtis. It is a kind of treasure map for the S(5,8,24) Steiner system, 24 bit Golay code, the Mathieu group M_24, and much more... (1/?)

wup, the modular forms db now has finite groups !

Submissions for QEC 2025 are now open through March 28. This will easily be the most exciting conference on quantum error correction yet! Conference homepage: qec25.yalepages.org EasyChair submission page: easychair.org/my/conferenc...

Tight complex projective two designs might exist!

Great reference on the role and power of homology in constructing the surface code: notes by Dan Browne. drive.google.com/file/d/1AB0K...

PSA: Points of the honeycomb tiling and heavy-hex point set do not form lattices because they do not form a group under addition. Using "Hexagonal lattice" to refer to the honeycomb tiling is a misnomer.

Major update: The zoo is not just a repository, but also a taxonomy. Now, every code page has a visualization of the code's primary ancestors. 🧵

We're hitting a steady 1.1k+ visitors per day on average, with interesting patterns emerging. Here's to another year of beautiful results! Last big peak at 3.2k must have been from the PR of the Google result, which we discussed several months before when it came out.

We're personally fans of the luckiest triorthogonal code ever, [[777,1,17]]. arxiv.org/pdf/2408.12752

We have a Discord. Invite link will expire so click now. discord.gg/EGpSndtT

You can now BibTeX the thousands of references mentioned in the zoo!

👋 Anyone need some codes? We've got 566 classical & quantum codes.