金刚石13 C核子定位用参数可调动态解耦序列

针对金刚石内¹³C核自旋的逐个定位，提出了一种非均匀分布周期内对称的动态解耦序列--可调动态解耦（APDD）序列。针对该序列，进行了理论推导和仿真分析；并就¹³C核自旋定位精度指标，与目前金刚石内原子量子态操控使用最为广泛的CPMG （Carr-Purcell-Meiboom-Gill）脉冲序列和XY4序列进行了比较。结果表明，相比于CPMG序列与XY4序列，APDD序列可将单个¹³C核自旋的定位精度提高6.27倍。进一步研究表明，在单个周期内比值τ₁/τ介于0.51~0.58范围为APDD序列核子定位最优工作条件。因此，APDD序列能被用于控制毗邻金刚石中NV^-色心的核自旋，并且在量子信息和量子探测器领域有着重要的应用。

Adjustable-parameter dynamical decoupling protocol for 13 C nuclear addressing in diamond

A symmetric non-equally spaced protocol named adjustable-parameter dynamical decoupling (APDD) was proposed to individually map ¹³C nuclear spin in diamond. The principles of the APDD sequence are in detail numerically calculated and simulation analyzed. The ¹³C nuclear spin addressing accuracy of APDD protocol was compared with Carr-Purcell-Meiboom-Gill (CPMG) and XY4 protocol, which are most widely used in diamond atom quantum manipulation. Results show that the ¹³C nuclear spin addressing accuracy of APDD protocol was 6.27 times higher than CPMG and XY4 sequences. Furthermore, τ₁/τ ratio ranging from 0.51 to 0.58 is the best operating condition for APDD protocol. The APDD protocol will pave the way towards manipulation of the nuclear spins surrounding the NV^-color center in diamond, which has significant applications in quantum information and quantum detector.