论文标题
stückelberg干涉法使用光学晶格中的自旋轨道耦合原子
Stückelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice
论文作者
论文摘要
研究了光学晶格中自旋 - 轨道耦合的冷原子的时间演变，其两个波段的能量光谱具有两个避免的横梁。施加力，使原子在横渡避免的交叉点时经历了两次连续的Landau-Zener隧道。 Stückelberg的干扰是由两条隧道之间绝热演化过程中积累的相产生的。该阶段是量规场依赖性的，因此提供了测量合成规场的新机会，通过计算双重通道过程后，通过计算自旋过渡概率来验证。得出时间依赖性和时间平均的自旋概率，在其中发现共振。我们还展示了该系统中的手性Bloch振荡和丰富的自旋摩托锁定行为。
Time evolution of spin-orbit-coupled cold atoms in an optical lattice is studied, with a two-band energy spectrum having two avoided crossings. A force is applied such that the atoms experience two consecutive Landau-Zener tunnelings while transversing the avoided crossings. Stückelberg interference arises from the phase accumulated during the adiabatic evolution between the two tunnelings. This phase is gauge field-dependent and thus provides new opportunities to measure the synthetic gauge field, which is verified via calculation of spin transition probabilities after a double passage process. Time-dependent and time-averaged spin probabilities are derived, in which resonances are found. We also demonstrate chiral Bloch oscillation and rich spin-momentum locking behavior in this system.
