Andrzej Ptok (27.02, 16:00)
Affiliation: Institute of Nuclear Physics, Polish Academy of Sciences, Poland Title: Formation of the Majorana bound states on defects Abstract:Zero-energy Majorana bound states can emerge at the edge of a low dimensional systems [1]. Due to the Non-Abelian statistics of such states, Majoranas are a good candidate for the realization of qubit for topological quantum computer. However, If they are to be used in creation of quantum computer, it is crucial to obtain an intentional creation and manipulation of this type of bound states. We show such a possibility in a setup of several systems (e.g. optical trap [2] or quantum dot-nanoring [3] hybrid system) in which we artificially create a 'defect' (inhomogeneity) region via electrostatic means. In such scenario, apart from non-trivial Majorana bound states, some trivial states like Andreev bound states can also be detected. We study the differences between those bound states and the possibility of their manipulation. [1] A. Y. Kitaev, Phys.-Usp. 44, 131 (2001). [2] A. Ptok, A. Cichy and T. Domański, J. Phys.: Condens. Matter 30, 355602 (2018) [3] A. Kobialka and A. Ptok, arXiv:1801.08021