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Mechanism for optical initialization of spin in NV center in diamond

机译:金刚石NV中心自旋光学初始化的机理

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摘要

Optical initialization of the negatively charged nitrogen-vacancy (NV ) center in diamond makes it one of the best candidates for realization of addressable spins in the solid state for quantum computing and other studies. However, its exact mechanism was not clear. We show that exact diagonalization of a many-electron Hamiltonian with parameters derived from ab initio GW calculations puts strong constraints on the mechanism. The energy surfaces of the low-energy many-body states and the relaxation processes of photoexcitation responsible for the optical initialization are calculated. Intersystem crossings are shown to be essential.
机译:金刚石中带负电荷的氮空位(NV)中心的光学初始化使其成为实现量子计算和其他研究中固态可寻址自旋的最佳候选者之一。但是,其确切机制尚不清楚。我们表明,具有从头算GW计算得出的参数的多电子哈密顿量的精确对角线化对该机理施加了严格的约束。计算了低能多体态的能表面和负责光学初始化的光激发弛豫过程。系统间交叉被证明是必不可少的。

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