# QuEra Demonstrates 2:1 Qubit Ratio. Its Roadmap Promises 100:1. - Date: 2026-04-21 - Category: Quantum Computing QuEra co-authored a paper showing 2 physical qubits can encode 1 reliable logical qubit. Its own roadmap tells investors it needs 10,000 physical qubits for 100 logical ones. The gap between what the paper shows and what the company sells is fiftyfold. ---