Author

R. Otxoa

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Preprint Aug 2026

A spin-bond theory unifying non-relativistic spin splitting and emergent spin-orbit textures

Magnetic order with vanishing net magnetization can produce non-relativistic spin-split bands, broadly categorized into even-parity altermagnets and odd-parity $p$-wave magnets. Here, we introduce a spin-bond theory that unifies these seemingly distinct phenomena into a single algebraic framework. We demonstrate that...

S. Allende, R. Otxoa · 0 citations

Preprint Aug 2026

Quantum Codes with Arbitrary Z-Rotation logical Gates and Applications to Fault-Tolerant Code Switching

This work utilizes the doubling technique as a unified framework to construct a class of quantum color codes encoding a single logical qubit with an arbitrarily large minimum distance, enabling the transversal realization of arbitrary small logical $Z-rotation gates within rotated surface codes.

Reza Dastbasteh, R. Otxoa, Pedro M. Crespo et al. · 1 citation