32 citations · 75 across the 13 of their papers we have counts for
15 papers
Highly crystalline superconducting TiN resonators grown on thermally reconstructed sapphire
Thomas J. Smart, Marc Neis, Janine Lorenz +15
High quality crystalline growth of a thin film on sapphire requires sufficient substrate preparation, often achieved via the use of aggressive chemical cleaning. Direct thermal rec…
Proximitized Topological Insulator Charge Island Fabricated via In Situ Multi-Angle Stencil Lithography
Benedikt Frohn, Tobias Schmitt, Vanessa Serrano +7
Hybrid superconductor-topological insulator (TI) nanostructures constitute a promising material platform for exploring proximity-induced superconductivity in systems with topologic…
On-chip stencil lithography for superconducting qubits
Roudy Hanna, Sören Ihssen, Simon Geisert +22
Improvements in circuit design and more recently in materials and surface cleaning have contributed to a rapid development of coherent superconducting qubits. However, organic resi…
Frustrated Frustration of Arrays with Four-Terminal Nb-Pt-Nb Josephson Junctions
Justus Teller, Christian Schäfer, Kristof Moors +6
We study the frustration pattern of a square lattice with in-situ fabricated Nb-Pt-Nb four-terminal Josephson junctions. The four-terminal geometry gives rise to a checker board pa…
Fabrication and characterization of InAs nanowire-based quantum dot structures utilizing buried bottom gates
Anton Faustmann, Patrick Liebisch, Benjamin Bennemann +6
Semiconductor nanowires can be utilized to create quantum dot qubits. The formation of quantum dots is typically achieved by means of bottom gates created by a lift-off process. As…
Two-dimensional photonic crystal cavities in ZnSe quantum well structures
Siqi Qiao, Nils von den Driesch, Xi Chen +7
ZnSe and related materials like ZnMgSe and ZnCdSe are promising II-VI host materials for optically mediated quantum information technology such as single photon sources or spin qub…
Flux-periodic supercurrent oscillations in an Aharonov-Bohm-type nanowire Josephson junction
Patrick Zellekens, Russell S. Deacon, Farah Basaric +10
Phase winding effects in hollow semiconductor nanowires with superconducting shells have been proposed as a route to engineer topological superconducting states. We investigate GaA…
Single in situ Interface Characterization Composed of Niobium and a Selectively Grown (BiSb)Te Topological Insulator Nanoribbon
Kevin Janßen, Philipp Rüßmann, Sergej Liberda +14
With increasing attention in Majorana physics for possible quantum bit applications, a large interest has been developed to understand the properties of the interface between a …
Ballistic surface channels in fully in situ defined BiTe Josephson junctions with aluminum contacts
Daniel Rosenbach, Abdur R. Jalil, Tobias W. Schmitt +5
In this letter we report on the electrical transport properties of BiTe in a Josephson junction geometry using superconducting Al electrodes with a Ti interdiffusion barrie…
Efficient, Spectrally Tunable Single-Photon Sources Based on Chlorine-Doped ZnSe Nanopillars
Y. Kutovyi, M. M. Jansen, S. Qiao +8
Isolated impurity states in epitaxially grown semiconductor systems possess important radiative features such as distinct wavelength emission with a very short radiative lifetime a…
Fully in-situ InAs nanowire Josephson junctions by selective-area growth and shadow evaporation
Pujitha Perla, H. Aruni Fonseka, Patrick Zellekens +10
Josephson junctions based on InAs semiconducting nanowires and Nb superconducting electrodes are fabricated in-situ by a special shadow evaporation scheme for the superconductor el…
Integration of topological insulator Josephson junctions in superconducting qubit circuits
Tobias W. Schmitt, Malcolm R. Connolly, Michael Schleenvoigt +16
The integration of semiconductor Josephson junctions (JJs) in superconducting quantum circuits provides a versatile platform for hybrid qubits and offers a powerful way to probe ex…
Hard-gap spectroscopy in a self-defined mesoscopic InAs/Al nanowire Josephson junction
Patrick Zellekens, Russell Deacon, Pujitha Perla +10
Superconductor/semiconductor-nanowire hybrid structures can serve as versatile building blocks to realize Majorana circuits or superconducting qubits based on quantized levels such…
Boosting Transparency in Topological Josephson Junctions via Stencil Lithography
Peter Schüffelgen, Daniel Rosenbach, Chuan Li +14
Hybrid devices comprised of topological insulator (TI) nanostructures in proximity to s-wave superconductors (SC) are expected to pave the way towards topological quantum computati…
MBE Growth of Al/InAs and Nb/InAs Superconducting Hybrid Nanowire Structures
Nicholas A. Güsken, Torsten Rieger, Benjamin Bennemann +4
We report on \textit{in situ} growth of crystalline Al and Nb shells on InAs nanowires. The nanowires are grown on Si(111) substrates by molecular beam epitaxy (MBE) without foreig…