论文标题
Bosonic $^{23} \ textrm {na}^{39} \ textrm {k} $地基态分子的超速气
An Ultracold Gas of Bosonic $^{23}\textrm{Na}^{39}\textrm{K}$ Ground-State Molecules
论文作者
论文摘要
我们报告了超电玻色偶极$^{23} \ textrm {na}^{39} \ textrm {k} $分子以其绝对的摇动基态状态。从浸入超低原子混合物中的弱结合的分子开始，我们使用绝热的拉曼通道将二聚体连贯地转移到振动基态。我们分析了纯分子样品和分子原子混合物中的两体衰变，并找到了一个意外的低两体衰变系数，用于分子之间的碰撞和$^{39} \ textrm {k} $原子在选定的超精细状态下。骨bosonic $^{23} \ textrm {na}^{39} \ textrm {k} $分子为未来的相同化学物种的费尔米管和玻色超数地面分子之间的比较开辟了道路。
We report the creation of ultracold bosonic dipolar $^{23}\textrm{Na}^{39}\textrm{K}$ molecules in their absolute rovibrational ground state. Starting from weakly bound molecules immersed in an ultracold atomic mixture, we coherently transfer the dimers to the rovibrational ground state using an adiabatic Raman passage. We analyze the two-body decay in a pure molecular sample and in molecule-atom mixtures and find an unexpectedly low two-body decay coefficient for collisions between molecules and $^{39}\textrm{K}$ atoms in a selected hyperfine state. The preparation of bosonic $^{23}\textrm{Na}^{39}\textrm{K}$ molecules opens the way for future comparisons between fermionic and bosonic ultracold ground-state molecules of the same chemical species.
