Fig. 2
From: Experimental realization of a non-magnetic one-way spin switch
Experimental setup. a Two counter-propagating Raman beams applied along x induce SO coupling along the elongated axis of the BEC. A repulsive, spin-independent optical barrier is initially positioned outside of the BEC and then swept along the x-axis at a constant velocity, \(v_{\mathrm{b}}\). b Two pseudospin states, mF = −1 (≡|↑〉) and 0 (≡|↓〉), are Raman coupled with coupling strength Ω and detuning δ, while the mF = +1 state is effectively decoupled from the system. c The resulting SO-coupled double-well band dispersion for parameters ℏΩ = 1.53Er, ℏδ = 0.27Er. Colors of band represent the spin composition of the dressed states, where red (blue) represents the |↑〉 (|↓〉) spin state. The blue shaded oval in the left dispersion minimum represents the initial state and quasimomentum of the BEC
