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Adaptive tuning of Majorana fermions in a quantum dot chain
Ion C. Fulga, Arbel Haim, Anton R. Akhmerov +1
We suggest a way to overcome the obstacles that disorder and high density of states pose to the creation of unpaired Majorana fermions in one-dimensional systems. This is achieved…
Statistical Topological Insulators
I. C. Fulga, B. van Heck, J. M. Edge +1
We define a class of insulators with gapless surface states protected from localization due to the statistical properties of a disordered ensemble, namely due to the ensemble's inv…
Braiding of non-Abelian anyons using pairwise interactions
M. Burrello, B. van Heck, A. R. Akhmerov
The common approach to topological quantum computation is to implement quantum gates by adiabatically moving non-Abelian anyons around each other. Here we present an alternative pe…
Topological blockade and measurement of topological charge
B. van Heck, M. Burrello, A. Yacoby +1
The fractionally charged quasiparticles appearing in the 5/2 fractional quantum Hall plateau are predicted to have an extra non-local degree of freedom, known as topological charge…
Thermal metal-insulator transition in a helical topological superconductor
I. C. Fulga, A. R. Akhmerov, J. Tworzydło +2
Two-dimensional superconductors with time-reversal symmetry have a Z_2 topological invariant, that distinguishes phases with and without helical Majorana edge states. We study the…
Zero-bias conductance peak and Josephson effect in graphene-NbTiN junctions
Mihai Popinciuc, Victor E. Calado, Xing L. Liu +3
We report electronic transport measurements of graphene contacted by NbTiN electrodes, which at low temperature remain superconducting up to at least 11 Tesla. In devices with a si…