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Quantum Computing Seminar
Tobias Schmitt, PGI-9

Online Talk

25 May 2021 15:00

Integration of topological insulators into superconducting transmon qubits

The PGI Science Office has begun a new series of seminars: the "Jülich Quantum Computing Seminar" will take place every fortnight on Tuesdays at 15:00 via video conference.

Here is the access data for all the seminars:

Zoom Link:

Meeting ID: 813 1452 6642
Passcode: 01


Topological insulators (TIs) are a novel class of materials which hold great promise for the realization of Majorana zero modes (MZMs) and topological quantum computing (TQC). The integration of TIs into superconducting quantum circuits does not only promise novel methods to probe MZMs but is also technologically relevant as some TQC layouts rely on a readout via well-established circuit quantum electrodynamic (cQED) techniques.

Recently, a first step towards this goal was achieved by the realization of hybrid transmon qubits based on TI Josephson junctions. After a brief introduction to TIs and hybrid transmon qubits, I will present preliminary experimental results of such a hybrid TI transmon and give insights in the sophisticated ultra-high vacuum (UHV) fabrication of these devices, which has lately also been considered for the fabrication of standard SIS transmon qubits.


Daniel Zeuch
Phone: +49 2461 61-6460