Quantum engineering of topological superconductors and of the ensuing Majorana zero modes might hold the key for realizing topological quantum computing and topology-based devices. Magnet-superconductor hybrid (MSH) systems have proven to be experimentally versatile platforms for the creation of topological superconductivity by custom-designing the complex structure of their magnetic layer. Here, we demonstrate that higher order topological superconductivity (HOTSC) can be realized in two-dimensional MSH systems by using stacked magnetic structures. We show that the sensitivity of the HOTSC to the particular magnetic stacking opens an intriguing ability to tune the system between trivial and topological phases using atomic manipulation techniques. We propose that the realization of HOTSC in MSH systems, and in particular the existence of the characteristic Majorana corner modes, allows for the implementation of a measurement-based protocols for topological quantum computing.
Wong, Ka Ho, Hirsbrunner, Mark R., Gliozzi, Jacopo, Malik, Arbaz, Bradlyn, Barry, Hughes, Taylor L., & Morr, Dirk K. (2023). Higher order topological superconductivity in magnet-superconductor hybrid systems. npj Quantum Materials, 8(1). https://doi.org/10.1038/s41535-023-00564-9
Wong, Ka Ho, Hirsbrunner, Mark R., Gliozzi, Jacopo, et al., "Higher order topological superconductivity in magnet-superconductor hybrid systems," npj Quantum Materials 8, no. 1 (2023), https://doi.org/10.1038/s41535-023-00564-9
@article{osti_1983456,
author = {Wong, Ka Ho and Hirsbrunner, Mark R. and Gliozzi, Jacopo and Malik, Arbaz and Bradlyn, Barry and Hughes, Taylor L. and Morr, Dirk K.},
title = {Higher order topological superconductivity in magnet-superconductor hybrid systems},
annote = {Abstract Quantum engineering of topological superconductors and of the ensuing Majorana zero modes might hold the key for realizing topological quantum computing and topology-based devices. Magnet-superconductor hybrid (MSH) systems have proven to be experimentally versatile platforms for the creation of topological superconductivity by custom-designing the complex structure of their magnetic layer. Here, we demonstrate that higher order topological superconductivity (HOTSC) can be realized in two-dimensional MSH systems by using stacked magnetic structures. We show that the sensitivity of the HOTSC to the particular magnetic stacking opens an intriguing ability to tune the system between trivial and topological phases using atomic manipulation techniques. We propose that the realization of HOTSC in MSH systems, and in particular the existence of the characteristic Majorana corner modes, allows for the implementation of a measurement-based protocols for topological quantum computing.},
doi = {10.1038/s41535-023-00564-9},
url = {https://www.osti.gov/biblio/1983456},
journal = {npj Quantum Materials},
issn = {ISSN 2397-4648},
number = {1},
volume = {8},
place = {United Kingdom},
publisher = {Nature Publishing Group},
year = {2023},
month = {06}}
Energy Frontier Research Centers (EFRC) (United States). Center for Quantum Sensing and Quantum Materials; Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)