论文标题
选择性Rydberg通过强偶极封锁抽水
Selective Rydberg pumping via strong dipole blockade
论文作者
论文摘要
高度激发的Rydberg水平之间的谐振偶极 - 偶极相互作用主导了短距离缩放时中性原子的相互作用，为$ 1/r^3 $。在这里，我们利用了强偶极 - 偶极相互作用和多频驱动场的综合效果，以提出一种选择性的Rydberg泵送机制。在两个原子的计算基础上，$ \ {| 00 \ rangle，| 01 \ wrangle，| 10 \ rangle，| 11 \ rangle \} $，这种机制允许$ | 11 \ rangle $恢复活力，以使单位驱动的Rydberg Station s there the Shore Thre Three Shirtions pundersy the单三个州被抑制。从数学形式的角度来看，我们实现了中性原子基态的类似föster共振。这种选择性Rydberg抽水的性能是使用Condroled-$ Z $ Gate的定义来评估的，这表明了原子间距离偏差的稳健性，Fösterresonance Feelext的波动以及双激发的Rydberg States的自发发射。作为这种机制的应用，我们详细讨论了两个原子通过地面封锁为两个原子的最大纠缠对称状态的制备，并分别在最先进的实验中，通过工程自发发射的最大纠缠的抗对称状态。
The resonant dipole-dipole interaction between highly excited Rydberg levels dominates the interaction of neutral atoms at short distances scaling as $1/r^3$. Here we take advantage of the combined effects of strong dipole-dipole interaction and multifrequency driving fields to propose one type of selective Rydberg pumping mechanism. In the computational basis of two atoms $\{|00\rangle, |01\rangle,|10\rangle,|11\rangle\}$, this mechanism allows $|11\rangle$ to be resonantly pumped upwards to the single-excited Rydberg states while the transitions of the other three states are suppressed. From the perspective of mathematical form, we achieve an analogous Föster resonance for ground states of neutral atoms. The performance of this selective Rydberg pumping is evaluated using the definition of fidelity for controlled-$Z$ gate, which manifests a characteristic of robustness to deviation of interatomic distance, fluctuation of Föster resonance defect, and spontaneous emission of double-excited Rydberg states. As applications of this mechanism, we discuss in detail the preparation of the maximally entangled symmetric state for two atoms via ground-state blockade, and the maximally entangled antisymmetric state via engineered spontaneous emission, within the state-of-the-art experiments, respectively.
