What does this research mean for the field?

Spin qubit decoherence, which is primarily driven by nonidealities in the host matrix such as defects and nuclear spins, can be mitigated through a materials-by-design approach that integrates first-principles simulations with materials synthesis and engineering. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to enhance spin qubit coherence by understanding and manipulating the materials affecting their performance.

April 20, 2026Open Access

Optimizing spin qubit coherence through materials codesign

Key Points

This research aims to enhance spin qubit coherence by understanding and manipulating the materials affecting their performance.
Reviewed sources of decoherence in spin qubit systems.
Integrated first-principles simulations with materials synthesis.
Investigated the role of their surrounding host matrix in coherence properties.
Identified key limitations on spin coherence caused by surrounding materials.
Established mitigation strategies for decoherence through materials engineering.
Provided insights into the linkage between material properties and their functionality in quantum systems.

Abstract

Abstract The evolution of defect-based spin qubit systems is currently transitioning from fundamental studies and proof-of-concept demonstrations into applications in the burgeoning field of quantum technology. Within this context, new challenges emerge, in particular, the need to understand and engineer the fundamental materials that form the hardware building blocks critical for the scalability and wide-scale adoption of such technologies. While earlier discussions have often focused on qubits within idealized systems, major limitations on spin coherence and optical properties arise from effects imposed by the nonideality of the surrounding host matrix. Decoherence can stem from a variety of sources, including other qubits, nuclear spins, and parasitic point- and extended defects, which interact with the qubit via magnetic and electric fields, photons, phonons, and strain. In this article, we focus on the relevant sources and mechanisms through which decoherence occurs and provide potential mitigation strategies via the synergistic integration of first-principles simulations and materials synthesis and engineering. We aim to provide a tangible link between material properties and material functions thereby enabling materials-by-design. Graphical abstract

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