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Google Willow chip reduces quantum magic-state errors 40-fold

Google Quantum AI Willow processor magic state cultivation quantum computing error correction

Google Quantum AI has announced a significant breakthrough in quantum computing using its Willow processor. The team successfully demonstrated a technique called ‘magic state cultivation,’ which reduces errors in the preparation of specialized quantum states by approximately 40 times.

Magic states are essential for executing the complex operations required for universal, fault-tolerant quantum computing. Historically, producing these states has been a massive bottleneck, with estimates suggesting that up to 95% of a quantum computer's capacity could be consumed just by the process of preparing them. The new method works like a filter: noisy quantum states are introduced into a small region of the chip, and coordinated measurements are used to detect and discard faulty attempts. Only the successful attempts—roughly 8% of the total—are retained, achieving a logical fidelity of 99.99%.

While this advancement is a crucial step toward practical quantum computing, researchers noted that the technology must still be demonstrated at a much larger scale. Furthermore, while the error reduction is substantial, the current error rate remains significantly higher than the benchmarks required to break modern cryptographic standards, such as RSA-2048. This progress has reignited discussions regarding the long-term security of digital assets like Bitcoin, particularly for older wallets where public keys are already exposed on the blockchain.

Entities

Craig Gidney · Google · Google Quantum AI · Noah Shutty · Science · Willow

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Sources

Κβαντικοί Υπολογιστές - Quantum Computing [avclub.gr]
Google Willow Quantum Breakthrough: 40x Error Drop Solves Magic State Bottleneck [btcwires.com]
Google’s Willow Magic-State Error Is One Million Times Above RSA Benchmark | TokenPost [www.tokenpost.com]
Googleの量子コンピューター研究で新成果──初期のビットコインに将来的な脅威＝CoinDesk | NADA NEWS（ナダ・ニュース） [www.nadanews.com]
Google Willow senkt Fehler bei Magic States – bleibt eine Bitcoin-Quelle zum Rechenrisiko [www.it-boltwise.de]
Google logra reducir 40 veces los errores en una operación clave para construir ordenadores cuánticos útiles [radiocolosal.com]
Κβαντικοί υπολογιστές: Η Google έλυσε στον επεξεργαστή Willow ένα «αγκάθι» 20 ετών - Techmaniacs [techmaniacs.gr]
Google’dan Kuantum Bilgisayarlarda Yeni Adım: Kripto İçin Korkulan Gün Yaklaşıyor mu? - Koin Bülteni [koinbulteni.com]
Google revoluciona la computación cuántica: reduce los errores 40 veces con Willow [www.negocios.com]
Computação quântica: Google alcança precisão de 99,99% em experimento [gd.eurisko.com.br]
Google’s Willow Quantum Chip Achieves 99.99% Magic-State Fidelity and Cuts Costs 40-Fold-Fold [www.tekedia.com]
40x meno errori: il salto quantistico che inquieta i vecchi Bitcoin [www.soldionline.it]
Google's quantum fix is still a million-fold short of code-breaking [www.cryptopolitan.com]
Bitcoin : Google franchit une étape vers des ordinateurs quantiques fiables [www.cointribune.com]
Google 量子晶片突破：Willow 錯誤率降 40 倍，比特幣加密拉警報 [www.blocktempo.com]
谷歌在量子计算取得突破，“魔态培育”技术使 Willow 芯片错误率降低约 40 倍 - IT之家 [www.ithome.com]
Google reduce hasta 40 veces los errores informáticos con su chip cuántico Willow [eluniverso.com]
Google reduz erros em etapa-chave da computação quântica [exame.com]
Google Willow cuts magic-state errors 40-fold, reaches 99. 99% fidelity [interestingengineering.com]