Quantum error correction of qudits beyond break-even

Extends bosonic quantum error correction beyond qubits to higher-dimensional GKP-encoded qudits.

Key Results

• Demonstrates beyond-break-even quantum error correction for bosonic qutrits and ququarts.
• Reports logical gains of $1.82\pm 0.03$ for qutrits and $1.87\pm 0.03$ for ququarts.
• Shows that higher-dimensional encoding inside a single oscillator can improve hardware efficiency without abandoning error correction.

Links

• Journal: Nature
• arXiv: 2409.15065

Verification

Title and first-author metadata were checked through Crossref, and the complete author order was checked against the paper title page on 2026-10-28.

Zoo Links

• bosonic-qubit
• gkp-codes