We experimentally realize spin-tensor momentum coupling (STMC) using three ground Zeeman states coupled by three Raman laser beams in an ultracold atomic system of ${}^{40}\mathrm{K}$ Fermi atoms. This type of STMC consists of two bright-state bands as a spin-orbit coupled spin-1/2 system and one dark-state middle band. Using radio-frequency spin-injection spectroscopy, we investigate the energy band of STMC. It is demonstrated that the middle state is a dark state in the STMC system. The experimental realization of STMC open the door for further exploring exotic quantum matter.

中文翻译：

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超冷费米气体中自旋张量动量耦合的实验实现

我们在超冷原子系统中使用三个拉曼激光束耦合的三个基塞曼状态实验性地实现了自旋张量动量耦合（STMC） ${}^{40}\mathrm{ķ}$费米原子。这种类型的STMC由两个亮态带（一个自旋轨道耦合的spin-1 / 2系统）和一个暗态中间带组成。使用射频自旋注入光谱，我们研究了STMC的能带。证明了在STMC系统中，中间状态是暗状态。STMC的实验实现为进一步探索外来量子物质打开了大门。