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Quantum Engineering Year 2: Advanced Quantum Science Month 30Day 816

This content was created with AI assistance and may contain errors or inaccuracies. Always verify against authoritative academic sources.

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Year 2·Month 30·Week 1

Day 816: Alternative Lattice Geometries

Day 816 of 2,016~17 min read

Learning Objectives

•**Describe** hexagonal and triangular surface code variants
•**Explain** the heavy-hex architecture used by IBM
•**Analyze** connectivity requirements for different geometries
•**Compare** error thresholds across lattice types
•**Calculate** qubit overhead for alternative geometries
•**Implement** lattice construction algorithms for multiple geometries

Today's Schedule (7 hours)

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On this page

1 Why Alternative Geometries 2 The Hexagonal Honeycomb Lattice 3 The Triangular Lattice 4 The Heavy-Hex Lattice IBM 5 Subsystem Surface Codes 6 Floquet Codes 7 Connectivity Requirements Comparison 8 Error Threshold Comparison 9 Qubit Overhead Analysis 10 Hardware Implementations Quantum Computing Connection IBMs Heavy-Hex Journey 2020-2025 Googles Square Lattice Approach Neutral Atom Flexibility

Day 815Day 816 of 2,016Day 817