Long-lived Feshbach molecules in a three-dimensional optical lattice.
Long-lived Feshbach molecules in a three-dimensional optical lattice.
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DOI：
10.1103/physrevlett.96.050402
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发表时间：
2005-10
影响因子：
8.6
通讯作者：
G. Thalhammer;K. Winkler;F. Lang;S. Schmid;R. Grimm;J. Denschlag
中科院分区：
文献类型：
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作者：
G. Thalhammer;K. Winkler;F. Lang;S. Schmid;R. Grimm;J. Denschlag
我们已经在三维光学晶格中创建并捕获了一个纯Feshbach分子样本。与以前没有晶格的实验相比，我们发现了显著的改进，例如长达700ms的寿命和将紧密受限的原子对转化为分子的接近单位的效率。晶格屏蔽了被捕获的分子的碰撞，因此通过振动猝灭克服了非弹性衰变的问题。此外，我们还开发了一种先进的提纯方案，该方案可以去除残留原子，导致晶格中的各个位置要么是空的，要么是在晶格的振动基态中填充了单个分子。
We have created and trapped a pure sample of Feshbach molecules in a three-dimensional optical lattice. Compared to previous experiments without a lattice, we find dramatic improvements such as long lifetimes of up to 700 ms and a near unit efficiency for converting tightly confined atom pairs into molecules. The lattice shields the trapped molecules from collisions and, thus, overcomes the problem of inelastic decay by vibrational quenching. Furthermore, we have developed an advanced purification scheme that removes residual atoms, resulting in a lattice in which individual sites are either empty or filled with a single molecule in the vibrational ground state of the lattice.