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Year 2·Month 32·Week 1

Day 872: Gauge Fixing Protocols

Day 872 of 2,016~17 min read

Learning Objectives

•**Define** gauge fixing as a projection operation on subsystem codes
•**Design** measurement-based gauge fixing protocols
•**Implement** fault-tolerant gauge fixing with error detection
•**Explain** how gauge fixing enables transversal gates not available in the original code
•**Describe** the Paetznick-Reichardt universality construction
•**Connect** gauge fixing to code switching mechanisms

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