Coherent transport through a Majorana island in an Aharonov-Bohm interferometer
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Coherent transport through a Majorana island in an Aharonov-Bohm interferometer. / Whiticar, A. M.; Fornieri, A.; O'Farrell, E. C. T.; Drachmann, A. C. C.; Wang, T.; Thomas, C.; Gronin, S.; Kallaher, R.; Gardner, G. C.; Manfra, M. J.; Marcus, C. M.; Nichele, F.
In: Nature Communications, Vol. 11, No. 1, 25.06.2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Coherent transport through a Majorana island in an Aharonov-Bohm interferometer
AU - Whiticar, A. M.
AU - Fornieri, A.
AU - O'Farrell, E. C. T.
AU - Drachmann, A. C. C.
AU - Wang, T.
AU - Thomas, C.
AU - Gronin, S.
AU - Kallaher, R.
AU - Gardner, G. C.
AU - Manfra, M. J.
AU - Marcus, C. M.
AU - Nichele, F.
PY - 2020/6/25
Y1 - 2020/6/25
N2 - Majorana zero modes are leading candidates for topological quantum computation due to non-local qubit encoding and non-abelian exchange statistics. Spatially separated Majorana modes are expected to allow phase-coherent single-electron transport through a topological superconducting island via a mechanism referred to as teleportation. Here we experimentally investigate such a system by patterning an elongated epitaxial InAs-Al island embedded in an Aharonov-Bohm interferometer. With increasing parallel magnetic field, a discrete sub-gap state in the island is lowered to zero energy yielding persistent 1e-periodic Coulomb blockade conductance peaks (e is the elementary charge). In this condition, conductance through the interferometer is observed to oscillate in a perpendicular magnetic field with a flux period of h/e (h is Planck's constant), indicating coherent transport of single electrons through the islands, a signature of electron teleportation via Majorana modes. Theories predict teleportation of phase-coherent single electrons through a topological superconducting island. Here, the authors report persistent Coulomb blockade conductance peaks due to coherent transport of single electrons through patterned InAs-Al islands embedded in an Aharonov-Bohm interferometer.
AB - Majorana zero modes are leading candidates for topological quantum computation due to non-local qubit encoding and non-abelian exchange statistics. Spatially separated Majorana modes are expected to allow phase-coherent single-electron transport through a topological superconducting island via a mechanism referred to as teleportation. Here we experimentally investigate such a system by patterning an elongated epitaxial InAs-Al island embedded in an Aharonov-Bohm interferometer. With increasing parallel magnetic field, a discrete sub-gap state in the island is lowered to zero energy yielding persistent 1e-periodic Coulomb blockade conductance peaks (e is the elementary charge). In this condition, conductance through the interferometer is observed to oscillate in a perpendicular magnetic field with a flux period of h/e (h is Planck's constant), indicating coherent transport of single electrons through the islands, a signature of electron teleportation via Majorana modes. Theories predict teleportation of phase-coherent single electrons through a topological superconducting island. Here, the authors report persistent Coulomb blockade conductance peaks due to coherent transport of single electrons through patterned InAs-Al islands embedded in an Aharonov-Bohm interferometer.
KW - COULOMB-BLOCKADE
KW - QUANTUM-DOT
KW - PHASE
U2 - 10.1038/s41467-020-16988-x
DO - 10.1038/s41467-020-16988-x
M3 - Journal article
C2 - 32587242
VL - 11
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
ER -
ID: 245666754