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Spin-photon entanglement interfaces in silicon carbide defect centers

机译:碳化硅缺陷中心中的旋转光子缠结界面

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Optically active spins in solid-state systems can be engineered to emit photons that are entangled with the spin in the solid. This allows for applications such as quantum communications, quantum key distribution, and distributed quantum computing. Recently, there has been a strong interest in silicon carbide defects, as they emit very close to the telecommunication wavelength, making them excellent candidates for long range quantum communications. In this work we develop explicit schemes for spin-photon entanglement in several SiC defects: the silicon monovacancy, the silicon divacancy, and the NV center in SiC. Distinct approaches are given for (i) single-photon and spin entanglement and (ii) the generation of long strings of entangled photons. The latter are known as cluster states and comprise a resource for measurement-based quantum information processing.
机译:固态系统中的光学活性旋转可以设计成发射与固体中的旋转缠结的光子。 这允许诸如量子通信,量子密钥分布和分布式量子计算的应用。 最近,对碳化硅缺陷有很大的兴趣,因为它们发射非常接近电信波长,使它们成为长距离量子通信的优异候选者。 在这项工作中,我们开发了几种SiC缺陷中的旋转光子缠结的明确方案:硅片单透视,硅量扫描和SiC中的NV中心。 对(i)单光子和旋转缠结的不同方法以及(ii)产生长串的缠结光子。 后者称为集群状态,并包括基于测量的量子信息处理的资源。

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