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arXiv · 2603.25952

Scalable topological quantum computing based on Sine-Cosine chain models

A. Lykholat·G. F. Moreira·I. R. Martins·D. Sousa·A. M. Marques·R. G. Dias
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Abstract

This work proposes a scalable framework for topological quantum computing using Matryoshka-type Sine-Cosine chains. These chains support high-dimensional qudit encoding within single systems, reducing the physical resource overhead compared to conventional qubit arrays. We describe how these chains can be used in Y-junction braiding protocols for gate operations and in extended memory architectures capable of storing multiple qubits simultaneously. Fidelity analysis shows partial topological protection against disorder, suggesting this approach is a possible pathway toward low-overhead quantum hardware.

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A. Lykholat, G. F. Moreira, I. R. Martins, D. Sousa, A. M. Marques, R. G. Dias. 2026-03-26. Scalable topological quantum computing based on Sine-Cosine chain models. https://arxiv.org/abs/2603.25952

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