论文标题
通过单元磁化模式预测固态旋转的强耦合
Predicted strong coupling of solid-state spins via a single magnon mode
论文作者
论文摘要
我们提出了一种方法来实现由钻石氮呈（NV）中心自旋组成的杂种量子系统，该系统耦合到低阻尼，低弹药的有机有机甲状腺钒蔬菜钒烯乙烯。我们得出了自旋马格诺合作的分析表达，这是微米尺度垂直磁化磁盘下NV位置的函数，并且表明，出乎意料的是，使用这种磁性材料在具有较大磁性时刻的更多传统材料中，合作社将更高，这是由于较大的磁性磁矩而导致的，这是由于减少的磁场化场而产生的。对于合理的实验参数，我们预测自旋 - 磁模式耦合强度为$ g \ sim 10 $ kHz。对于同位素上的纯$^{12} $ C钻石，我们预测NV旋转与空置的磁杆模式的强耦合，在钻石内的巨大NV旋转位置，合作性$ \ MATHCAL C = 6 $，在NV Center植入的空间精度范围内。因此，我们的提案描述了单旋甲酸 - 麦克诺（Magnon）占用率的实用途径以及在微米长度尺度上纠缠的NV中心的实用途径。
We propose an approach to realize a hybrid quantum system composed of a diamond nitrogen-vacancy (NV) center spin coupled to a magnon mode of the low-damping, low-moment organic ferrimagnet vanadium tetracyanoethylene. We derive an analytical expression for the spin-magnon cooperativity as a function of NV position under a micron-scale perpendicularly magnetized disk, and show that, surprisingly, the cooperativity will be higher using this magnetic material than in more conventional materials with larger magnetic moments, due to in part to the reduced demagnetization field. For reasonable experimental parameters, we predict that the spin-magnon-mode coupling strength is $g\sim 10$ kHz. For isotopically pure $^{12}$C diamond we predict strong coupling of an NV spin to the unoccupied magnon mode, with cooperativity $\mathcal C=6$ for a wide range of NV spin locations within the diamond, well within the spatial precision of NV center implantation. Thus our proposal describes a practical pathway for single-spin-state-to-single-magnon-occupancy transduction and for entangling NV centers over micron length scales.
