Experimental realization of spin-tensor momentum coupling in ultracold Fermi gases
Donghao Li, Lianghui Huang, Peng Peng, Guoqi Bian, Pengjun Wang, Zengming Meng, Liangchao Chen, Jing Zhang
Abstract
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.
Topics & Concepts
Fermi Gamma-ray Space TelescopePhysicsRealization (probability)Spin (aerodynamics)Tensor (intrinsic definition)Momentum (technical analysis)Coupling (piping)Fermi gasCondensed matter physicsQuantum electrodynamicsQuantum mechanicsMaterials scienceElectronMathematicsPure mathematicsMetallurgyFinanceStatisticsThermodynamicsEconomicsCold Atom Physics and Bose-Einstein CondensatesAtomic and Subatomic Physics ResearchQuantum, superfluid, helium dynamics