论文标题
新兴的Zeeman晶格中的格子动力学
Lattice dynamics in an emergent Zeeman lattice
论文作者
论文摘要
周期性带结构是凝结物理学的标志性现象。虽然通常是由外部电位施加的，但周期性也可以通过不一定是空间周期性的耦合的相互作用而产生。在这里，我们研究了晶格结构中的动力学，该动力学是从拉曼和射频耦合到稀 - 天然气玻色 - 内斯坦冷凝物中出现的。我们展示了各种技术，包括Kapitza-Dirac散射，Bloch振荡以及旋转和动量解决测量值的晶格。这种组合的耦合方案允许出色的可调性和控制性，从而使未来对非常规条带结构（例如准灯地面带和具有半含量频带差距的条带）进行了研究。
Periodic band structures are a hallmark phenomenon of condensed matter physics. While often imposed by external potentials, periodicity can also arise through the interplay of couplings that are not necessarily spatially periodic on their own. Here, we investigate dynamics in a lattice structure that emerges from the simultaneous application of Raman and radio frequency coupling to a dilute-gas Bose-Einstein condensate. We demonstrate a variety of techniques including Kapitza-Dirac scattering, Bloch oscillations, and lattice shaking with spin and momentum resolved measurements. This combined coupling scheme allows for exceptional tunability and control, enabling future investigations into unconventional band structures such as quasi-flat ground bands and those with semimetal-like band gaps.
