Quantum

A quantum computer based on Cornucopia codes.

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 16/10/2026, 02:43:24 UTC.

Briefings

A new quantum architecture called Cornucopia uses [[2844,1426,18]] code blocks to store 1,426 logical qubits each, enabling universal logical operations with low overhead. The modular design connects these blocks via bridges, allowing individual addressability of 1,422 logical qubits per block. Excluding magic-state factories, executing any basic instruction requires an average of 4.1 physical qubits per logical qubit, preserving the resource advantage of high-rate quantum memory while enabling fault-tolerant computation.

Key points

• The Cornucopia architecture implements a universal set of logical operations at low overhead for [[2844,1426,18]] code blocks.
• Each code block stores 1,426 logical qubits and serves as a universal logical processor connected by bridges.

Context

This research proposes a modular quantum computer based on Cornucopia codes, addressing the trade-off between high encoding rates and the ancilla overhead required for universal logical operations. The architecture enables fault-tolerant quantum computers by preserving the resource advantage of ultra-high-rate quantum memory while supporting universal logical computation.

Limitations

The evidence is from an arXiv preprint (arXiv:2610.19073v2) and does not include experimental results, citations, or peer review. The specific performance metrics and physical qubit counts are based on theoretical proposals rather than empirical data.

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