AI 中文总结
本文提出一种基于优化的脉冲整形控制框架，在无静态偏置场条件下实现对NV色心系综的选择性与鲁棒操控，通过时间调制驱动场实现取向和子空间选择性，解决简并系统中的光谱重叠问题。
AI 中文摘要
金刚石中的氮-空位（NV）色心是矢量磁测量的领先平台，对磁场的幅度和方向均具有内在灵敏度。NV磁力计通常依赖外部偏置场来消除基态自旋子能级的简并，从而实现对不同NV取向和自旋跃迁的光谱区分。然而，在高精度测量中，这种偏置场会通过热漂移、机械漂移和磁滞漂移系统地引入误差，从而阻碍对目标磁场的精确测量。为解决这一限制，已有多种策略被提出，包括基于光偏振的取向标记、光学各向异性、与附近核自旋的强耦合、圆微波偏振以及定制脉冲序列。在本工作中，我们提出了一种基于优化的脉冲整形控制框架，能够在无需静态偏置场的情况下实现对NV系综的选择性和鲁棒性操控。我们的方法通过对驱动场进行最优时间调制，实现了取向选择性和子空间选择性控制，为解析简并NV系统中的光谱重叠提供了一条途径。
英文摘要
Nitrogen-vacancy (NV) centers in diamond are a leading platform for vector magnetometry, offering intrinsic sensitivity to both the magnitude and direction of magnetic fields. NV magnetometers typically rely on an external bias field to lift the degeneracy of the ground-state spin sublevels, enabling spectral discrimination of different NV orientations and spin transitions. At high accuracy, however, such a bias field systematically introduces errors through thermal, mechanical, and hysteretic drifts, thus hindering the accurate measurement of the magnetic field of interest. Several strategies have been proposed to address this limitation, including optical polarization-based orientation labeling, optical anisotropy, strong coupling to nearby nuclear spins, circular microwave polarization, and tailored pulse sequences. In this work, we introduce an optimization-based pulse-shaping control framework that enables selective and robust manipulation of NV ensembles without relying on a static bias field. Our method achieves both orientation-selective and subspace-selective control through optimal temporal modulation of the driving fields, providing a route to resolving spectral overlaps in degenerate NV systems.
Comments18 pages, 6 figures. To be published in Journal of the Optical Society of America B
