具有可调谐磁通量的合成霍尔梯
Synthetic Hall ladder with tunable magnetic flux
摘要：
本文描述了一个在一维光晶格中中性$^{173}$ Yb原子的可调磁通量的三腿霍尔阶梯系统。梯形腿由原子的三个超精细基态自旋态形成，并且复杂的腿间链接通过使用多个激光束的自旋态之间的拉曼耦合产生。通过梯形格片$ϕ$的有效磁通量由拉曼激光束与格轴的角度控制。我们研究了突然应用拉曼耦合后，$ϕ\approx\fracπ{3}, \fracπ{2},$和$\frac{2π}{3}$的霍尔梯形系统在不同的腿间链结构中的猝灭动力学.原子在自旋成分和晶格位置平面内的半经典轨道表现出有效磁场作用下的特征运动。在一个管配置与三个腿周期性地连接，失超演变被观察到基本上阻尼，这是由于随机通量线程霍尔管。
英文摘要：
We describe a synthetic three-leg Hall ladder system with a tunable magnetic flux for neutral $^{173}$Yb atoms in a one-dimensional optical lattice. The ladder legs are formed by three hyperfine ground spin states of the atoms, and the complex interleg links are generated through Raman couplings between the spin states using multiple laser beams. The effective magnetic flux through a ladder plaquette, $ϕ$, is controlled by the angles of the Raman laser beams with the lattice axis. We investigate the quench dynamics of the Hall ladder system for $ϕ\approx\fracπ{3}, \fracπ{2},$ and $\frac{2π}{3}$ after a sudden application of the Raman coupling in various interleg link configurations. The semi-classical trajectory of the atoms in the plane of the spin composition and lattice position exhibits the characteristic motion for the effective magnetic field. In a tube configuration with the three legs cyclically linked, the quench evolution was observed to be substantially damped, which is attributed to the random flux threading the Hall tube.
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