Google demonstrates quantum computing breakthrough as observers weigh Q-day implications

Google demonstrated a quantum computing technique called "magic state cultivation," which could help overcome a major bottleneck in building practical quantum computers. The development has prompted observers to discuss "Q-day," the hypothetical point when quantum machines could break current cryptography, including that securing Bitcoin and other blockchains. While the news is technically significant, it does not represent an immediate threat to crypto markets, as fault-tolerant quantum computers remain years or decades away.