Topological Quantum Computation: Mitigating Decoherence through Topological Protection

Jincheng Zhang

Published Sep 5, 2026• 0 citations

Abstract

Quantum computation represents a paradigm shift in information processing, promising exponential speedups for specific computational tasks. However, a significant hurdle to realizing practical quantum computers lies in the phenomenon of quantum decoherence – the loss of quantum information due to interactions with the surrounding environment. This work explores the potential of topological quantum computation (TQC) as a robust solution to mitigate decoherence. TQC leverages exotic states of matter, specifically surface states of topological insulators and quantum spin Hall systems, to create protected quantum bits (qubits). These states exhibit inherent topological protection, meaning their quantum properties are robust against local perturbations, drastically reducing the detrimental effects of decoherence. We detail the core principles of TQC, focusing on how the topological nature of these materials safeguards quantum information. We will demonstrate how this approach minimizes the influence of environmental noise, leading to improved qubit coherence times and, consequently, enhanced fidelity in quantum computations. This research contributes to the ongoing exploration of TQC as a viable pathway towards scalable and fault-tolerant quantum computing.

DOI: 10.5281/zenodo.22339689

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