Majorana bound states in a coupled quantum-dot hybrid-nanowire system
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Majorana bound states in a coupled quantum-dot hybrid-nanowire system. / Deng, M. T.; Vaitiekenas, S.; Hansen, E. B.; Danon, J.; Leijnse, M.; Flensberg, K.; Nygård, J.; Krogstrup, P.; Marcus, C. M.
In: Science, Vol. 354, No. 6319, 23.12.2016, p. 1157-1562.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Majorana bound states in a coupled quantum-dot hybrid-nanowire system
AU - Deng, M. T.
AU - Vaitiekenas, S.
AU - Hansen, E. B.
AU - Danon, J.
AU - Leijnse, M.
AU - Flensberg, K.
AU - Nygård, J.
AU - Krogstrup, P.
AU - Marcus, C. M.
N1 - [Qdev]
PY - 2016/12/23
Y1 - 2016/12/23
N2 - 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.
AB - 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.
KW - cond-mat.mes-hall
KW - cond-mat.supr-con
KW - quant-ph
U2 - 10.1126/science.aaf3961
DO - 10.1126/science.aaf3961
M3 - Journal article
VL - 354
SP - 1157
EP - 1562
JO - Science
JF - Science
SN - 0036-8075
IS - 6319
ER -
ID: 184616056