Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State
Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State
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DOI：
10.1103/physrevx.2.041014
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发表时间：
2012-11-29
影响因子：
12.5
通讯作者：
Regal, C. A.
中科院分区：
文献类型：
--
作者：
Kaufman, A. M.;Lester, B. J.;Regal, C. A.
我们报道了单个中性原子在光镊子中冷却到其三维振动基态。在使用拉曼边带冷却几十毫秒后，我们通过边带光谱测量了约90%的三维基态占据。我们进一步观察到对囚禁原子的自旋和运动态的相干控制。我们的演示表明，仅由一束紧密聚焦的光束形成的光学镊子，为有效的边带冷却创造了足够的限制。这种基态中性原子源将在许多量子模拟和逻辑应用中发挥作用，这些应用需要一个通用的平台来存储和操作超冷的单个中性原子。例如，这些结果将改进目前研究原子-光子耦合和里德堡量子逻辑门的光镊子实验，并可能提供新的机会，如快速生产单个偶极分子或在镊子阵列中进行量子模拟。
We report cooling of a single neutral atom to its three-dimensional vibrational ground state in an optical tweezer. After employing Raman sideband cooling for tens of milliseconds, we measure via sideband spectroscopy a three-dimensional ground-state occupation of about 90%. We further observe coherent control of the spin and motional state of the trapped atom. Our demonstration shows that an optical tweezer, formed simply by a tightly focused beam of light, creates sufficient confinement for efficient sideband cooling. This source of ground-state neutral atoms will be instrumental in numerous quantum simulation and logic applications that require a versatile platform for storing and manipulating ultracold single neutral atoms. For example, these results will improve current optical-tweezer experiments studying atom-photon coupling and Rydberg quantum logic gates, and could provide new opportunities such as rapid production of single dipolar molecules or quantum simulation in tweezer arrays.