Generalized scaling of spin qubit coherence in over 12,000 host materials
arXiv:2102.02986 · doi:10.1073/pnas.2121808119
Abstract
Spin defect centers with long quantum coherence times () are key solid-state platforms for a variety of quantum applications. Recently, cluster correlation expansion (CCE) techniques have emerged as a powerful tool to simulate the of defect electron spins in these solid-state systems with good accuracy. Here, based on CCE, we uncover an algebraic expression for generalized for host compounds with dilute nuclear spin baths, which enables a quantitative and comprehensive materials exploration with a near instantaneous estimate of the coherence. We investigate more than 12,000 host compounds at natural isotopic abundance, and find that silicon carbide (SiC), a prominent widegap semiconductor for quantum applications, possesses the longest coherence times among widegap non-chalcogenides. In addition, more than 700 chalcogenides are shown to possess a longer than SiC. We suggest new potential host compounds with promisingly long up to 47 ms, and pave the way to explore unprecedented functional materials for quantum applications.
24 pages, 4 figures, 1 table
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