Google tries out error correction on its quantum processor
A Hacker News item pointing to Google's demonstration of quantum error correction on its superconducting processor, in which logical qubits built from repetition-style codes are used to suppress errors as more physical qubits are added. No abstract accompanies the link, so details of code distance and measured error rates are not captured here.
Why it matters: Showing that error rates fall as code size grows is the basic scaling behavior any fault-tolerant architecture must exhibit, and Google's superconducting devices were an early testbed for it.
Error correction & fault toleranceHardware: superconductingoverview