Integrated quantum photonics with silicon carbide: challenges and prospects
arXiv:2010.15700 · doi:10.1103/PRXQuantum.1.020102
Abstract
Optically-addressable solid-state spin defects are promising candidates for storing and manipulating quantum information using their long coherence ground state manifold; individual defects can be entangled using photon-photon interactions, offering a path toward large scale quantum photonic networks. Quantum computing protocols place strict limits on the acceptable photon losses in the system. These low-loss requirements cannot be achieved without photonic engineering, but are attainable if combined with state-of-the-art nanophotonic technologies. However, most materials that host spin defects are challenging to process: as a result, the performance of quantum photonic devices is orders of magnitude behind that of their classical counterparts. Silicon carbide (SiC) is well-suited to bridge the classical-quantum photonics gap, since it hosts promising optically-addressable spin defects and can be processed into SiC-on-insulator for scalable, integrated photonics. In this Perspective, we discuss recent progress toward the development of scalable quantum photonic technologies based on solid state spins in silicon carbide, and discuss current challenges and future directions.
arXiv comment20 pages, 6 figures
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