少体模型中锐Majorana跃迁的可观测性
Observability of a Sharp Majorana Transition in a Few-Body Model
摘要：
我们提出了实验观察到的签名拓扑马约拉纳准粒子的相互作用冷原子模型的少体限制[Iemini等。118 200404（2017）]。在此极限下，总的现场密度和单体关联随模型参数的变化而平滑，而计算的晶格两端的互信息则表明系统急剧过渡到拓扑基态.此外，局域密度和宇称测量为观测超冷原子中基态Majorana准粒子提供了一条实验可行的途径。我们的研究结果为利用少体系统作为马约拉纳物理学的试验场奠定了一个充满希望的未来。
英文摘要：
We propose experimentally observable signatures of of topological Majorana quasiparticles in the few-body limit of the interacting cold-atom model of [Iemini et al. Phys. Rev. Lett. 118 200404 (2017)]. In this limit, the total on-site density and single-body correlations change smoothly with the model parameters, while the calculated mutual information of opposite ends of the lattice indicates a sharp transition of the system to a topological ground state. Furthermore, local density and parity measurements provide an experimentally viable path for observing the ground state Majorana quasiparticles in ultracold atoms. Our results lay out a promising future for utilizing few-body systems as a testing ground for Majorana physics.
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