中文

用于生成自由落体纳米金刚石宏观叠加态的自旋动力学解耦

量子物理 2022-02-01 v3 介观与纳米尺度物理 光学

摘要

含有带负电氮空位中心(NV{\text{NV}}^{-})的悬浮纳米金刚石已被提出作为生成宏观空间叠加态的平台。其要求包括具有较长的NV{\text{NV}}^{-}自旋相干时间,这需要制定一种动力学解耦策略,其中规律的自旋翻转不会在非均匀磁场中通过斯特恩-盖拉赫效应抵消叠加态的增长。在此,我们提出一种方案,将直径250250 nm的金刚石置于空间分离超过250250 nm的叠加态中,同时引入动力学解耦。我们让金刚石在磁结构(包括由磁齿产生的1.131.13 m非均匀区域)中自由下落2.42.4 m来实现这一点。

关键词

引用

@article{arxiv.2105.02105,
  title  = {Spin dynamical decoupling for generating macroscopic superpositions of a free-falling nanodiamond},
  author = {B. D. Wood and S. Bose and G. W. Morley},
  journal= {arXiv preprint arXiv:2105.02105},
  year   = {2022}
}

备注

Version 1: 6 pages, 2 figures. Supersedes arXiv:1810.07045 [quant-ph]. Version 2: 11 pages, 5 figures. Removed nanodiamond spin coherence time results as they can now be found in arXiv:2112.01899 [cond-mat.mes-hall]. Added additional details and figures as appendices, and in the discussion section. Version 3: 11 pages, 5 figures. Figures edited to work in grayscale, title change