Ryoma Ito

Breaking RSA-2048 with 23,000 cat qubits. 🐈 In 3.14 days This is the finding of our new paper, the latest resource estimate for Shor’s algorithm, the benchmark the whole field uses to compare quantum hardware 📄 The results are a record low for total quantum resources at this speed of execution, about 40 times fewer physical qubits than @GoogleQuantumAI 's Craig Gidney 2025 estimate. 🏁 RSA-2048 is the lock behind secure websites, banking and software updates 🔐 Shor's algorithm has been able to break it, on paper since 1994. Nobody has built the machine yet, but every year the estimate of how big it needs to be gets a little smaller. In 2019, the best estimate was 20 million qubits. In 2024, ours was just under 100,000. Now 22,593, in 3.14 days. Yes, pi 🥧 Small isn't enough. Fast isn't enough. The new study optimizes for both. 😼 Bitcoin, Ethereum and most blockchains aren't secure either, about 30,000 qubits would be needed to crack a Bitcoin key in about an hour ₿ ⏳ How we got here, what it means for cryptography, and when it all converges, our CEO Théau Peronnin talks about it in the blog 👇 📝 Blog - alice-bob.com/blog/our-estim… 📄 Paper - eprint.iacr.org/2026/2665 Stay curious, more info coming soon 👀 #QuantumComputing #CatQubits #ShorsAlgorithm #PostQuantumCryptography #Cryptography #FaultTolerance #DeepTech