期刊
PHYSICAL REVIEW RESEARCH
卷 2, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.023205
关键词
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资金
- German Research Foundation Cluster of Excellence Advanced Imaging of Matter of the Universitat Hamburg [DFG EXC 2056, 390715994]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB28000000]
Abrikosov vortices in Fe-based superconductors are a promising platform for hosting Majorana zero-energy modes. Their adiabatic exchange is a key ingredient for Majorana-based quantum computing. However, the adiabatic braiding process cannot be realized in state-of-the-art experiments. We propose to replace the infinitely slow, long-path braiding by a procedure that only slightly moves vortices in a special geometry without actually physically exchanging the Majoranas, like a Majorana carousel. Although the resulting finite-time gate is not topologically protected, it is robust against variations in material-specific parameters and in the braiding speed. We prove this analytically. Our results carry over to Y junctions of Majorana wires.
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