https://yakinin.com/en/tags/%23faulttolerantqc/ Recent content in #FaultTolerantQC on Home Hugo -- 0.148.2 en Mon, 18 Aug 2025 00:03:45 +0000 https://yakinin.com/en/posts/20250818-quantum-bottleneck-neglectons/ Mon, 18 Aug 2025 00:03:45 +0000 https://yakinin.com/en/posts/20250818-quantum-bottleneck-neglectons/ <p>Quantum computing&rsquo;s biggest roadblock isn&rsquo;t speed; it&rsquo;s stability. Qubits are notoriously fragile, easily collapsing from environmental noise. This makes scaling a reliable quantum computer an immense engineering challenge. One of the most promising solutions is topological quantum computing, which encodes information not in the state of a particle, but in the geometric &ldquo;braiding&rdquo; of quasiparticles called anyons. This approach is inherently more robust against decoherence.</p> <p>However, the leading candidates for this approach, known as Ising anyons, have a critical flaw: they aren&rsquo;t &ldquo;universal.&rdquo; Performing computations by braiding them is like trying to type with half the keys missing from your keyboard—you can perform some operations, but not the full set required for general-purpose computing.</p>