Google Quantum AI & DeepMind Demonstrate Modular Hyperbolic Codes for Over 30x QEC Overhead Reduction
Google Quantum AI, Google DeepMind, and MIT researchers have described a quantum error correction architecture based on modular hyperbolic codes. In a new arXiv manuscript, they report that the approach reduces physical qubit overhead by more than 30 times compared with standard 2D surface code constructions. The result is currently a theoretical proposal with no hardware demonstration reported in the abstract.
Within two years, Google could target a fault-tolerant logical qubit experiment on superconducting hardware with roughly 30 times fewer physical qubits than surface-code estimates would imply, if the modular hyperbolic code's connectivity requirements can be met.