Winkler K, Thalhammer G, Theis M, Ritsch H, Grimm R, Denschlag J Hecker
Institut für Experimentalphysik, Universität Innsbruck, 6020 Innsbruck, Austria.
Phys Rev Lett. 2005 Aug 5;95(6):063202. doi: 10.1103/PhysRevLett.95.063202.
We have created a dark quantum superposition state of a Rb Bose-Einstein condensate and a degenerate gas of Rb2 ground-state molecules in a specific rovibrational state using two-color photo-association. As a signature for the decoupling of this coherent atom-molecule gas from the light field, we observe a striking suppression of photo-association loss. In our experiment the maximal molecule population in the dark state is limited to about 100 Rb2 molecules due to laser induced decay. The experimental findings can be well described by a simple three mode model.
我们利用双色光缔合，在特定的振转状态下，制备出了铷玻色 - 爱因斯坦凝聚体与铷₂基态分子简并气体的暗量子叠加态。作为这种相干原子 - 分子气体与光场解耦的一个标志，我们观察到光缔合损失显著受到抑制。在我们的实验中，由于激光诱导衰变，暗态下分子的最大数量被限制在约100个铷₂分子。实验结果可以用一个简单的三模模型很好地描述。
