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Majorana bound state in a coupled quantum-dot hybrid-nanowire system

Deng, M. T. ; Vaitiekénas, S. ; Hansen, E. B. ; Danon, J. ; Leijnse, M. ; Flensberg, K. ; Nygård, J. ; Krogstrup, P. ; Marcus, C. M.

Science (American Association for the Advancement of Science), 2016-12, Vol.354 (6319), p.1557-1562 [Periódico revisado por pares]

United States: American Association for the Advancement of Science

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Título:
Majorana bound state in a coupled quantum-dot hybrid-nanowire system
Autor: Deng, M. T. ; Vaitiekénas, S. ; Hansen, E. B. ; Danon, J. ; Leijnse, M. ; Flensberg, K. ; Nygård, J. ; Krogstrup, P. ; Marcus, C. M.
Assuntos: Coalescing ; Condensed Matter Physics ; Den kondenserade materiens fysik ; Fysik ; Magnetic fields ; Materials science ; Mathematical models ; Nanowires ; Natural Sciences ; Naturvetenskap ; Physical Sciences ; Quantum dots ; Qunatum dots ; Semiconductors ; Spectrometers ; Superconductors ; Topology
É parte de: Science (American Association for the Advancement of Science), 2016-12, Vol.354 (6319), p.1557-1562
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Hybrid nanowires combining semiconductor and superconductor materials appear well suited for the creation, detection, and control of Majorana bound states (MBSs). We demonstrate the emergence of MBSs from coalescing Andreev bound states (ABSs) in a hybrid InAs nanowire with epitaxial Al, using a quantum dot at the end of the nanowire as a spectrometer. Electrostatic gating tuned the nanowire density to a regime of one or a few ABSs. In an applied axial magnetic field, a topological phase emerges in which ABSs move to zero energy and remain there, forming MBSs. We observed hybridization of the MBS with the end-dot bound state, which is in agreement with a numerical model. The ABS/MBS spectra provide parameters that are useful for understanding topological superconductivity in this system.
Editor: United States: American Association for the Advancement of Science
Idioma: Inglês

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Majorana bound state in a coupled quantum-dot hybrid-nanowire system

Deng, M. T. ; Vaitiekénas, S. ; Hansen, E. B. ; Danon, J. ; Leijnse, M. ; Flensberg, K. ; Nygård, J. ; Krogstrup, P. ; Marcus, C. M.

United States: American Association for the Advancement of Science

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