Molecular Assembly of Ground-State Cooled Single Atoms
Molecular Assembly of Ground-State Cooled Single Atoms
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DOI：
10.1103/physrevx.9.021039
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发表时间：
2019-02
影响因子：
12.5
通讯作者：
Lee R. Liu;Lee R. Liu;J. D. Hood;J. D. Hood;Yi-fu Yu;Yi-fu Yu;Jun Zhang;Kenneth Wang;Kenneth Wang;Yen-Wei Lin;Yen-Wei Lin;T. Rosenband;Kang-kuen Ni;Kang-kuen Ni
中科院分区：
文献类型：
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作者：
Lee R. Liu;Lee R. Liu;J. D. Hood;J. D. Hood;Yi-fu Yu;Yi-fu Yu;Jun Zhang;Kenneth Wang;Kenneth Wang;Yen-Wei Lin;Yen-Wei Lin;T. Rosenband;Kang-kuen Ni;Kang-kuen Ni
我们利用光镊演示了两种单原子的完全量子态控制，并将原子组装成一个分子。我们的演示包括在光镊中对单个原子（Cs）进行三维基态冷却，以最小的加热传输几微米，并与单个Na原子合并。随后，两个原子以61(4)%的概率占据同时运动的基态。这实现了一个恰好两个共捕获原子的样品，接近相空间密度限制为1，并允许一对原子有效的受激拉曼转移到三重电子地电位$a^3\Sigma^+$的分子束缚状态。这一结果是相干创建单个超冷分子的关键步骤，为未来量子模拟和量子信息处理的探索迈出了关键一步。
We demonstrate full quantum state control of two species of single atoms using optical tweezers and assemble the atoms into a molecule. Our demonstration includes 3D ground-state cooling of a single atom (Cs) in an optical tweezer, transport by several microns with minimal heating, and merging with a single Na atom. Subsequently, both atoms occupy the simultaneous motional ground state with 61(4)\% probability. This realizes a sample of exactly two co-trapped atoms near the phase-space-density limit of one, and allows for efficient stimulated-Raman transfer of a pair of atoms into a molecular bound state of the triplet electronic ground potential $a^3\Sigma^+$. The results are key steps toward coherent creation of single ultracold molecules, for future exploration of quantum simulation and quantum information processing.