Andreev reflection of helical edge modes in InAs/GaSb quantum spin Hall insulator. Images of edge current in InAs/GaSb quantum wells. Imaging currents in HgTe quantum wells in the quantum spin Hall regime. Evidence for helical edge modes in inverted InAs/GaSb quantum wells. Superconductor–nanowire devices from tunneling to the multichannel regime: zero-bias oscillations and magnetoconductance crossover. Anomalous zero-bias conductance peak in a Nb–InSb nanowire–Nb hybrid device. Zero-bias peaks and splitting in an Al-InAs nanowire topological superconductor as a signature of Majorana fermions. Signatures of Majorana fermions in hybrid superconductor–semiconductor nanowire devices. Topological superconductivity in Cu xBi2Se3. Robust helical edge transport in gated InAs/GaSb bilayers. Quantum spin Hall effect in inverted type-II semiconductors. Quantum spin Hall insulator state in HgTe quantum wells. Quantum spin Hall effect and topological phase transition in HgTe quantum wells. Z2 topological order and the quantum spin Hall effect. Topological phases and quasiparticle braiding. Non-Abelian anyons and topological quantum computation. Topological insulators and superconductors. These experiments establish InAs/GaSb as a promising platform for the confinement of Majoranas into localized states, enabling future investigations of non-Abelian statistics. The edge-dominated regime arises only under conditions of high-bulk resistivity, which we associate with the two-dimensional topological phase. Using superconducting quantum interference we demonstrate gate-tuning between edge-dominated and bulk-dominated regimes of superconducting transport. Here, we report superconductivity induced in the edge modes of semiconducting InAs/GaSb quantum wells, a two-dimensional topological insulator 5, 6, 7, 8, 9, 10. Localized Majorana zero-modes obey non-Abelian exchange statistics, making them interesting building blocks for topological quantum computing 3, 4. Topological superconductivity is an exotic state of matter that supports Majorana zero-modes, which have been predicted to occur in the surface states of three-dimensional systems, in the edge states of two-dimensional systems, and in one-dimensional wires 1, 2.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |