Proximity Induced Superconductivity for fabrication of Topological Qubits
Abstract : Using proximity induced superconductivity in MBE grown films of Bi(2-x)SbxTe3 to fabricate majorana based qubits. This hybrid system uses a topological insulator and a normal s- wave superconducting metal (Nb) to behave as a px+ipy superconductor. The bismuth antimony telluride (BST) has no bulk carriers, so a gap in the induced superconductivity would provide a platform for long lived Majorana parity qubits. My talk will concentrate specifically on the strength of this induced superconductivity. It is strongly dependent on the contact transparency between the TI and the normal metal. Optimizing contacts should lead to stronger proximity induced superconductivity in the BST surface state. The system itself is an array of josephson junctions, and I'll talk about the fabrication methods as well as some experimental methods to measure the contact transparenc
This talk is intended for local QIS researchers at the University of Illinois; please do not share it more broadly. The link will be sent to the IQUIST mailing lists before the seminar.
