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Quantum Engineering Year 2: Advanced Quantum Science Month 34Day 937

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Year 2·Month 34·Week 2

Day 937: Experimental Status

Day 937 of 2,016~21 min read

Learning Objectives

•**Trace the experimental history** of Majorana research from 2012 to present
•**Analyze the 2018 Nature retraction** and its implications for the field
•**Distinguish between** genuine and spurious zero-bias peaks
•**Evaluate current experimental claims** with appropriate skepticism
•**Identify remaining challenges** for definitive Majorana detection
•**Assess the current confidence level** in Majorana existence

Today's Schedule (7 hours)

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On this page

1 A Timeline of Majorana Experiments 2012 The First Claims 2014-2017 Building Evidence 2018 The Quantized Conductance Claim 2 The 2021 Retraction What Happened The Investigation Lessons for the Field 3 What Signatures Are Really Being Observed Majorana Zero Modes Topological Trivial Mechanisms Non-Topological 4 Current Experimental Approaches The Topological Gap Protocol TGP Three-Terminal Devices Coulomb Blockade Spectroscopy Fractional Josephson Effect 5 Current State of Evidence 2024-2025 What Has Been Convincingly Shown What Remains Controversial Where Are We Really 6 Challenges for Definitive Proof The Smoking Gun Problem Materials Challenges Measurement Challenges 7 Alternative Platforms Iron-Based Superconductors Planar Josephson Junctions Magnetic Atom Chains Fractional Quantum Hall States 8 Honest Assessment What Would Change the Consensus The Scientific Process Working Quantum Computing Applications Impact on the Roadmap Hedging Strategies

Day 936Day 937 of 2,016Day 938