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
We still can't prove why turbo codes work this well! errorcorrectionzoo.org/c/turbo
Turbo codes were shown experimentally to nearly achieve Shannon capacity, and information theorists didn't believe that a telecom engineer was able to solve this longstanding problem.
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?...
"Third, implementation of real-time QEC with sufficiently high throughput and latency may favor using simple decoders (e.g., cellular automata), which may not be compatible with the most resource-efficient QEC codes."
"Second, we may double-down on codes with access to fast transversal gates, such as surface codes and color codes, despite their suboptimal encoding rates."
"First, in the long term we advocate for transitioning away from Pauli-based computation, in order to implement gates in parallel. This results in the need to implement Clifford gates explicitly."
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
