Adiabatic cooling of cesium to 700 nK in an optical lattice.
Adiabatic cooling of cesium to 700 nK in an optical lattice.
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DOI：
10.1103/physrevlett.74.1542
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发表时间：
1995-02
影响因子：
8.6
通讯作者：
Anders Kastberg;William D. Phillips;S. Rolston;R. Spreeuw;Poul S. Jessen
中科院分区：
文献类型：
--
作者：
Anders Kastberg;William D. Phillips;S. Rolston;R. Spreeuw;Poul S. Jessen
我们将Cs原子局域在光学晶格的波长大小的势威尔斯阱中，并通过绝热膨胀将其冷却到700 nK的三维温度。在光晶格中，我们将原子预冷到11mK。然后，我们在几百秒内降低了捕获势，导致原子质心分布扩大，温度降低了一个简单的3D能带理论。这是有史以来测量的最低三维动力学温度。
We localize Cs atoms in wavelength-sized potential wells of an optical lattice, and cool them to athree-dimensional temperature of 700 nK by adiabatic expansion. In the optical lattice we precool theatoms to l1 mK. We then reduce the trapping potential in a few hundred s, causing the atomiccenter-of-mass distribution to expand and the temperature to decrease by an amount which agrees witha simple 3D band theory. These are the lowest 3D kinetic temperatures ever measured.