Observation of Coupled Vortex Lattices in a Mass-Imbalance Bose and Fermi Superfluid Mixture.
Observation of Coupled Vortex Lattices in a Mass-Imbalance Bose and Fermi Superfluid Mixture.
复制标题
DOI：
10.1103/physrevlett.117.145301
复制
发表时间：
2016-06
影响因子：
8.6
通讯作者：
Xing-Can Yao;Hao-Ze Chen;Yu-Ping Wu;Xiang-Pei Liu;Xiao-Qiong Wang;Xiao Jiang;Youjin Deng;Yu-Ao Chen-Y
中科院分区：
文献类型：
--
作者：
Xing-Can Yao;Hao-Ze Chen;Yu-Ping Wu;Xiang-Pei Liu;Xiao-Qiong Wang;Xiao Jiang;Youjin Deng;Yu-Ao Chen-Y
量子化涡在各种超流体现象中起着至关重要的作用。在玻色-费米超流体混合物中，特别是两个质量不平衡的物质，由于玻色和费米超流体之间的相互作用，这种宏观量子现象特别丰富。然而，产生玻色-费米两种超流体，产生耦合涡旋晶格，并进一步探测种间相互作用效应仍然具有挑战性。在这里，我们通过实验实现了锂-6和钾-41的稀释气体的两种超流体，其质量比约为7。通过旋转超流体混合物，我们同时产生了两种耦合的涡格，从而为双超流体提供了明确的视觉证据。此外，我们报告了由于玻色-费米相互作用导致的两种涡旋形成和衰变的一些非常规行为。
Quantized vortices play an essential role in diverse superfluid phenomena. In a Bose-Fermi superfluid mixture, especially of two mass-imbalance species, such macroscopic quantum phenomena are particularly rich due to the interplay between the Bose and Fermi superfluidity. However, generating a Bose-Fermi two-species superfluid, producing coupled vortex lattices within, and further probing interspecies interaction effects remain challenging. Here, we experimentally realize a two-species superfluid with dilute gases of lithium-6 and potassium-41, having a mass ratio of about seven. By rotating the superfluid mixture, we simultaneously produce coupled vortex lattices of the two species and thus present a definitive visual evidence for the double superfluidity. Moreover, we report several unconventional behaviors, due to the Bose-Fermi interaction, on the formation and decay of two-species vortices.