We report on the selective addressing of an individual atom in a pair ofsingle-atom microtraps separated by $3\;\mu$m. Using a tunable light-shift, werender the selected atom off-resonant with a global Rydberg excitation laserwhich is resonant with the other atom, making it possible to selectively blockthis atom from being excited to the Rydberg state. Furthermore we demonstratethe controlled manipulation of a two-atom entangled state by using theaddressing beam to induce a phase shift onto one component of the wave functionof the system, transferring it to a dark state for the Rydberg excitationlight. Our results are an important step towards implementing quantuminformation processing and quantum simulation with large arrays of Rydbergatoms.
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机译：我们报道了在一对单原子微阱中以$ 3 \; \ mu $ m分隔的单个原子的选择性寻址。使用可调谐的光移，用一个与另一个原子共振的全局里德伯格激发激光，对选定的原子进行非共振振荡，从而有可能选择性地阻止该原子被激发到里德堡态。此外，我们证明了通过使用寻址光束在系统波函数的一个分量上引起相移，并将其转移到Rydberg激发光的暗态，可以控制两个原子的纠缠态。我们的研究结果是使用大型Rydbergatom阵列实现量子信息处理和量子模拟的重要一步。
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