Jochim S, Bartenstein M, Altmeyer A, Hendl G, Riedl S, Chin C, Hecker Denschlag J, Grimm R
Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria.
Science. 2003 Dec 19;302(5653):2101-3. doi: 10.1126/science.1093280. Epub 2003 Nov 13.
We report on the Bose-Einstein condensation of more than 10(5) Li2 molecules in an optical trap starting from a spin mixture of fermionic lithium atoms. During forced evaporative cooling, the molecules are formed by three-body recombination near a Feshbach resonance and finally condense in a long-lived thermal equilibrium state. We measured the characteristic frequency of a collective excitation mode and demonstrated the magnetic field-dependent mean field by controlled condensate spilling.
我们报道了从费米子锂原子的自旋混合物开始，在光学阱中实现了超过10⁵个Li₂分子的玻色 - 爱因斯坦凝聚。在强迫蒸发冷却过程中，分子通过靠近费什巴赫共振处的三体复合形成，最终凝聚成一个长寿命的热平衡态。我们测量了一种集体激发模式的特征频率，并通过控制凝聚体溢出展示了磁场依赖的平均场。
