论文标题
使用定期驱动的超低原子工程和探测非亚伯手性自旋液体
Engineering and probing non-Abelian chiral spin liquids using periodically driven ultracold atoms
论文作者
论文摘要
我们提出了一种基于周期性（FLOQUET）驱动器的冷原子的基塔夫蜂窝模型的方案，鉴于使用量子模拟器实现和探测非亚伯式手性旋转液体。我们将有效的哈密顿量推导到逆频扩展中的领先地位，并表明该驱动器在频谱中张开拓扑间隙，而无需混合有效的Majorana和涡流自由度。我们应对探测Majorana fermions物理学的挑战，同时仅访问原始的复合自由度。具体而言，我们建议在存在浮雕驱动器的情况下，使用GAP光谱和边缘淬火检测手性旋转液相的性质。发现与中性主要主要电流相关的热室效应相关的手性边缘信号对于现实准备的状态是可靠的。通过将强烈的相互作用与Floquet Engineering结合在一起，我们的工作为未来对非亚伯兴奋的研究铺平了道路，并使用量子模拟器量化了热传输。
We propose a scheme to implement Kitaev's honeycomb model with cold atoms, based on a periodic (Floquet) drive, in view of realizing and probing non-Abelian chiral spin liquids using quantum simulators. We derive the effective Hamiltonian to leading order in the inverse-frequency expansion, and show that the drive opens up a topological gap in the spectrum without mixing the effective Majorana and vortex degrees of freedom. We address the challenge of probing the physics of Majorana fermions, while having only access to the original composite spin degrees of freedom. Specifically, we propose to detect the properties of the chiral spin liquid phase using gap spectroscopy and edge quenches in the presence of the Floquet drive. The resulting chiral edge signal, which relates to the thermal Hall effect associated with neutral Majorana currents, is found to be robust for realistically-prepared states. By combining strong interactions with Floquet engineering, our work paves the way for future studies of non-Abelian excitations and quantized thermal transport using quantum simulators.
