Understanding Google Echoes
In October 2025, Google announced the publication of a paper in Nature on a
Quantum error correction below the surface code threshold - Nature
nature.comTwo below-threshold surface code memories on superconducting processors markedly reduce logical error rates, achieving high efficiency and real-time decoding, indicating potential for practical large-scale fault-tolerant quantum algorithms.
Dominik Hangleiter
Dominik Hangleiter's website
Google says it’s made a quantum computing breakthrough that reduces errors
The company’s surface code technique allows its quantum bits to faithfully store and manipulate data for longer, which could pave the way for useful quantum computers.
Meet Willow, our state-of-the-art quantum chip
Our new quantum chip demonstrates error correction and performance that paves the way to a useful, large-scale quantum computer.
Quantum frontiers may be closer than they appear
An overview of how Google is accelerating its timeline for post-quantum cryptography migration.