Measuring stabilizers in a quantum error correcting code
December 4, 2024 at 9:31 PM
Measuring stabilizers in a quantum error correcting code
Wonderful new (technical) paper by Charles Cao and collaborators (including @preskill.bsky.social) on using ideas from quantum information theory to explore how to get emergent curved space from entanglement in the bulk.
arxiv.org/abs/2603.13475
arxiv.org/abs/2603.13475
State-dependent geometries from magic-enriched quantum codes
Quantum error-correcting codes provide a powerful framework for emergent spacetime, yet existing holographic code models describe only quantum fields on a fixed background: in exact erasure-correcting...
arxiv.org
March 31, 2026 at 9:59 PM
Wonderful new (technical) paper by Charles Cao and collaborators (including @preskill.bsky.social) on using ideas from quantum information theory to explore how to get emergent curved space from entanglement in the bulk.
arxiv.org/abs/2603.13475
arxiv.org/abs/2603.13475
Researchers have found that arranging a quantum processor's computing qubits and error-correcting qubits in a bilayer structure helps to make error correction more efficient.
Streamlined Quantum Error Correction
A new method for fixing errors in quantum computations can be just as accurate as previous approaches while needing fewer resources.
physics.aps.org
January 9, 2025 at 6:01 PM
Researchers have found that arranging a quantum processor's computing qubits and error-correcting qubits in a bilayer structure helps to make error correction more efficient.
If you work on quantum error correction, be sure to check out The Error Correction Zoo: errorcorrectionzoo.org/
The Error Correction Zoo is an open, community-driven resource dedicated to compiling, organizing, and explaining known quantum error correction codes.
The Error Correction Zoo is an open, community-driven resource dedicated to compiling, organizing, and explaining known quantum error correction codes.
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The Error Correction Zoo collects and organizes error-correcting codes.
errorcorrectionzoo.org
February 2, 2026 at 4:46 PM
If you work on quantum error correction, be sure to check out The Error Correction Zoo: errorcorrectionzoo.org/
The Error Correction Zoo is an open, community-driven resource dedicated to compiling, organizing, and explaining known quantum error correction codes.
The Error Correction Zoo is an open, community-driven resource dedicated to compiling, organizing, and explaining known quantum error correction codes.
Gonna tell me kids this was some topological quantum error correcting code.
December 9, 2024 at 12:04 PM
Gonna tell me kids this was some topological quantum error correcting code.
Quantum error-correcting codes can be constructed to look computationally like completely random quantum encodings while still correcting substantial noise, linking cryptographic pseudorandomness with quantum error correction.
arxiv.org/abs/2609.38986
arxiv.org/abs/2609.38986
Quantum Pseudorandom Error-Correcting Codes
Pseudorandom error-correcting codes (PRCs), introduced by Christ and Gunn [CRYPTO 2024], are classical error-correcting codes whose codewords are computationally indistinguishable from uniformly rando...
arxiv.org
October 1, 2026 at 1:20 PM
Quantum error-correcting codes can be constructed to look computationally like completely random quantum encodings while still correcting substantial noise, linking cryptographic pseudorandomness with quantum error correction.
arxiv.org/abs/2609.38986
arxiv.org/abs/2609.38986
arxiv.org/abs/2606.11484
/Handbook of Error-Correcting Codes/
Victor V. Albert, Philippe Faist
(676 pages, errorcorrectionzoo.org )
/Handbook of Error-Correcting Codes/
Victor V. Albert, Philippe Faist
(676 pages, errorcorrectionzoo.org )
Handbook of Error-Correcting Codes
Barcode scans, clear phone calls, reliable data storage, satellite communication, and large-scale quantum computation are all made possible by error correction. We present a handbook version of The Er...
arxiv.org
June 12, 2026 at 3:22 AM
arxiv.org/abs/2606.11484
/Handbook of Error-Correcting Codes/
Victor V. Albert, Philippe Faist
(676 pages, errorcorrectionzoo.org )
/Handbook of Error-Correcting Codes/
Victor V. Albert, Philippe Faist
(676 pages, errorcorrectionzoo.org )
We codesign quantum error correcting codes and decoders in quantum low-density lattice codes.
scirate.com/arxiv/2609.0...
scirate.com/arxiv/2609.0...
September 4, 2026 at 7:34 AM
We codesign quantum error correcting codes and decoders in quantum low-density lattice codes.
scirate.com/arxiv/2609.0...
scirate.com/arxiv/2609.0...
📢 Our paper, 𝗟𝗼𝗰𝗮𝗹𝗶𝘀𝗲𝗱 𝘀𝘁𝗮𝘁𝗶𝘀𝘁𝗶𝗰𝘀 𝗱𝗲𝗰𝗼𝗱𝗶𝗻𝗴 𝗳𝗼𝗿 𝗾𝘂𝗮𝗻𝘁𝘂𝗺 𝗹𝗼𝘄-𝗱𝗲𝗻𝘀𝗶𝘁𝘆 𝗽𝗮𝗿𝗶𝘁𝘆-𝗰𝗵𝗲𝗰𝗸 𝗰𝗼𝗱𝗲𝘀, is now published in Nature Communications (Nature Portfolio). Great to see it in print!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Localized statistics decoding for quantum low-density parity-check codes - Nature Communications
Quantum low-density parity-check (QLDPC) codes offer lower overhead than topological quantum error-correcting codes, but decoding remains a key challenge for scalable fault-tolerant quantum computing....
www.nature.com
September 3, 2025 at 10:34 AM
📢 Our paper, 𝗟𝗼𝗰𝗮𝗹𝗶𝘀𝗲𝗱 𝘀𝘁𝗮𝘁𝗶𝘀𝘁𝗶𝗰𝘀 𝗱𝗲𝗰𝗼𝗱𝗶𝗻𝗴 𝗳𝗼𝗿 𝗾𝘂𝗮𝗻𝘁𝘂𝗺 𝗹𝗼𝘄-𝗱𝗲𝗻𝘀𝗶𝘁𝘆 𝗽𝗮𝗿𝗶𝘁𝘆-𝗰𝗵𝗲𝗰𝗸 𝗰𝗼𝗱𝗲𝘀, is now published in Nature Communications (Nature Portfolio). Great to see it in print!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
This appeared on arXiv today, love it when quantum foundations and quantum error correction collide...!
"Contextuality in Quantum Error-Correcting Codes"
"Contextuality in Quantum Error-Correcting Codes"
February 5, 2025 at 11:57 AM
This appeared on arXiv today, love it when quantum foundations and quantum error correction collide...!
"Contextuality in Quantum Error-Correcting Codes"
"Contextuality in Quantum Error-Correcting Codes"
Interesting paper implementing magic state distillation with neutral atoms: arxiv.org/abs/2412.15165
They're in a weird regime: below the distillation threshold but over the color code threshold. They see improvements!... But hit a ceiling imposed by their d=3 memory error (because d=5 does worse).
They're in a weird regime: below the distillation threshold but over the color code threshold. They see improvements!... But hit a ceiling imposed by their d=3 memory error (because d=5 does worse).
Experimental Demonstration of Logical Magic State Distillation
Realizing universal fault-tolerant quantum computation is a key goal in quantum information science. By encoding quantum information into logical qubits utilizing quantum error correcting codes, physi...
arxiv.org
December 20, 2024 at 8:47 AM
Interesting paper implementing magic state distillation with neutral atoms: arxiv.org/abs/2412.15165
They're in a weird regime: below the distillation threshold but over the color code threshold. They see improvements!... But hit a ceiling imposed by their d=3 memory error (because d=5 does worse).
They're in a weird regime: below the distillation threshold but over the color code threshold. They see improvements!... But hit a ceiling imposed by their d=3 memory error (because d=5 does worse).
Combines quantum error correction with cryptographic pseudorandomness. Constructs quantum codes indistinguishable from Haar-random isometries while enabling efficient recovery from local quantum noise, advancing foundations of quantum information security.
Quantum Pseudorandom Error-Correcting Codes
arxiv.org
October 1, 2026 at 2:44 AM
Combines quantum error correction with cryptographic pseudorandomness. Constructs quantum codes indistinguishable from Haar-random isometries while enabling efficient recovery from local quantum noise, advancing foundations of quantum information security.
April 18, 2026 at 2:31 PM
One of quantum mechanics’ strangest properties may be the secret ingredient that makes powerful #quantum computers possible. Known as contextuality, it plays a central role in error-correcting codes, which protect quantum information from noise. 🧪⚛️ physicsworld.com/a/the-weirdn...
The weirdness of quantum contextuality is not a bug – it's a feature – Physics World
Counterintuitive quantum property turns out to be the hidden backbone of fault-tolerant quantum computers
physicsworld.com
April 30, 2026 at 3:35 PM
One of quantum mechanics’ strangest properties may be the secret ingredient that makes powerful #quantum computers possible. Known as contextuality, it plays a central role in error-correcting codes, which protect quantum information from noise. 🧪⚛️ physicsworld.com/a/the-weirdn...
Is measuring syndromes then using a decoder to infer the most likely error the best thing to do when trying to do quantum error correction? I prove cases where it is, where it isn't, and how to find the optimal threshold. Happy to get this out: let me know what you think! scirate.com/arxiv/2603.0...
Optimal recovery for quantum error correction
The calculation of the error threshold of quantum error correcting codes typically proceeds as follows. First, syndromes are measured. Then, a decoder infers the error chain and the corresponding corr...
scirate.com
March 9, 2026 at 6:18 AM
Is measuring syndromes then using a decoder to infer the most likely error the best thing to do when trying to do quantum error correction? I prove cases where it is, where it isn't, and how to find the optimal threshold. Happy to get this out: let me know what you think! scirate.com/arxiv/2603.0...
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
arxiv.org/abs/2606.11484
Handbook of Error-Correcting Codes
Barcode scans, clear phone calls, reliable data storage, satellite communication, and large-scale quantum computation are all made possible by error correction. We present a handbook version of The Er...
arxiv.org
June 11, 2026 at 2:51 AM
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
arxiv.org/abs/2606.11484
Localized statistics decoding for quantum low-density parity-check codes
www.nature.com/articles/s41...
A highly efficient and highly parallelizable decoder for qLDPC codes, overcoming a bottleneck in the field. Warm thanks to the team for the collaboration.
www.nature.com/articles/s41...
A highly efficient and highly parallelizable decoder for qLDPC codes, overcoming a bottleneck in the field. Warm thanks to the team for the collaboration.
Localized statistics decoding for quantum low-density parity-check codes - Nature Communications
Quantum low-density parity-check (QLDPC) codes offer lower overhead than topological quantum error-correcting codes, but decoding remains a key challenge for scalable fault-tolerant quantum computing....
www.nature.com
September 3, 2025 at 11:51 AM
Localized statistics decoding for quantum low-density parity-check codes
www.nature.com/articles/s41...
A highly efficient and highly parallelizable decoder for qLDPC codes, overcoming a bottleneck in the field. Warm thanks to the team for the collaboration.
www.nature.com/articles/s41...
A highly efficient and highly parallelizable decoder for qLDPC codes, overcoming a bottleneck in the field. Warm thanks to the team for the collaboration.
Today in Nature, the first experimental demonstration that scaling up a quantum error-correcting code makes it better. It's a critical step on the path to useful quantum computers. Read more in @quantamagazine.bsky.social:
Quantum Computers Cross Critical Error Threshold | Quanta Magazine
In a first, researchers have shown that adding more “qubits” to a quantum computer can make it more resilient. It’s an essential step on the long road to practical applications.
www.quantamagazine.org
December 9, 2024 at 4:24 PM
Today in Nature, the first experimental demonstration that scaling up a quantum error-correcting code makes it better. It's a critical step on the path to useful quantum computers. Read more in @quantamagazine.bsky.social:
The online QASAR seminar will be restarting soon! The scope includes everything related to fault-tolerant quantum computation or quantum error correcting codes. Contact @vasmer.bsky.social or me if you have a talk you want to give. Also if there is a result you really want to hear about let us know!
January 23, 2025 at 1:24 PM
The online QASAR seminar will be restarting soon! The scope includes everything related to fault-tolerant quantum computation or quantum error correcting codes. Contact @vasmer.bsky.social or me if you have a talk you want to give. Also if there is a result you really want to hear about let us know!
Quantum Pseudorandom Error-Correcting Codes
https://arxiv.org/pdf/2609.38986
Min-Hsiu Hsieh, Shogo Yamada.
https://arxiv.org/pdf/2609.38986
Min-Hsiu Hsieh, Shogo Yamada.
https://arxiv.org/abs/2609.38986
arXiv abstract link
arxiv.org
October 1, 2026 at 7:32 AM
Quantum Pseudorandom Error-Correcting Codes
https://arxiv.org/pdf/2609.38986
Min-Hsiu Hsieh, Shogo Yamada.
https://arxiv.org/pdf/2609.38986
Min-Hsiu Hsieh, Shogo Yamada.
Min-Hsiu Hsieh, Shogo Yamada: Quantum Pseudorandom Error-Correcting Codes https://arxiv.org/abs/2609.38986 https://arxiv.org/pdf/2609.38986 https://arxiv.org/html/2609.38986
October 1, 2026 at 7:00 AM
Min-Hsiu Hsieh, Shogo Yamada: Quantum Pseudorandom Error-Correcting Codes https://arxiv.org/abs/2609.38986 https://arxiv.org/pdf/2609.38986 https://arxiv.org/html/2609.38986
Is Google's approach to error-free quantum computers already outdated?
The coding that forms the basis of Google’s recent breakthrough in error-correcting quantum computers is facing fierce competition
www.newscientist.com/article/2461...
docs.google.com/document/d/1...
The coding that forms the basis of Google’s recent breakthrough in error-correcting quantum computers is facing fierce competition
www.newscientist.com/article/2461...
docs.google.com/document/d/1...
Is Google's approach to error-free quantum computers already outdated?
The coding that forms the basis of Google’s recent breakthrough in error-correcting quantum computers is facing fierce competition
www.newscientist.com
December 26, 2024 at 10:20 PM
Is Google's approach to error-free quantum computers already outdated?
The coding that forms the basis of Google’s recent breakthrough in error-correcting quantum computers is facing fierce competition
www.newscientist.com/article/2461...
docs.google.com/document/d/1...
The coding that forms the basis of Google’s recent breakthrough in error-correcting quantum computers is facing fierce competition
www.newscientist.com/article/2461...
docs.google.com/document/d/1...
How do you correct this error in a Layer Code?
In new work arxiv.org/abs/2510.09218 we introduce a concatenated matching decoder and show that Layer Codes assisted by this decoder are partially self-correcting quantum memories at finite temperature!
In new work arxiv.org/abs/2510.09218 we introduce a concatenated matching decoder and show that Layer Codes assisted by this decoder are partially self-correcting quantum memories at finite temperature!
October 13, 2025 at 1:46 AM
How do you correct this error in a Layer Code?
In new work arxiv.org/abs/2510.09218 we introduce a concatenated matching decoder and show that Layer Codes assisted by this decoder are partially self-correcting quantum memories at finite temperature!
In new work arxiv.org/abs/2510.09218 we introduce a concatenated matching decoder and show that Layer Codes assisted by this decoder are partially self-correcting quantum memories at finite temperature!