455 citations · 3.3k across the 41 of their papers we have counts for
41 papers
Flip-chip-based fast inductive parity readout of a planar superconducting island
M. Hinderling, S. C. ten Kate, D. Z. Haxell +8
Properties of superconducting devices depend sensitively on the parity (even or odd) of the quasiparticles they contain. Encoding quantum information in the parity degree of freedo…
Spin-degeneracy breaking and parity transitions in three-terminal Josephson junctions
M. Coraiola, D. Z. Haxell, D. Sabonis +7
Harnessing spin and parity degrees of freedom is of fundamental importance for the realization of emergent quantum devices. Nanostructures embedded in superconductor--semiconductor…
Demonstration of nonlocal Josephson effect in Andreev molecules
D. Z. Haxell, M. Coraiola, M. Hinderling +9
We perform switching current measurements of planar Josephson junctions (JJs) coupled by a common superconducting electrode, with independent control over the two superconducting p…
Zeeman and Orbital Driven Phase Transitions in Planar Josephson Junctions
D. Z. Haxell, M. Coraiola, D. Sabonis +7
We perform supercurrent and tunneling spectroscopy measurements on gate-tunable InAs/Al Josephson junctions (JJs) in an in-plane magnetic field, and report on phase shifts in the c…
Phase-engineering the Andreev band structure of a three-terminal Josephson junction
M. Coraiola, D. Z. Haxell, D. Sabonis +11
In hybrid Josephson junctions with three or more superconducting terminals coupled to a semiconducting region, Andreev bound states may form unconventional energy band structures,…
Control over epitaxy and the role of the InAs/Al interface in hybrid two-dimensional electron gas systems
E. Cheah, D. Z. Haxell, R. Schott +12
In-situ synthesised semiconductor/superconductor hybrid structures became an important material platform in condensed matter physics. Their development enabled a plethora of novel…
Flip-chip-based microwave spectroscopy of Andreev bound states in a planar Josephson junction
M. Hinderling, D. Sabonis, S. Paredes +8
We demonstrate a flip-chip-based approach to microwave measurements of Andreev bound states in a gate-tunable planar Josephson junction using inductively-coupled superconducting lo…
Dynamical vortex transitions in a gate-tunable Josephson junction array
C. G. L. Bøttcher, F. Nichele, J. Shabani +2
We explore vortex dynamics in a two-dimensional Josephson junction array of micron-size superconducting islands fabricated from an epitaxial Al/InAs superconductor-semiconductor he…
Microwave-induced conductance replicas in hybrid Josephson junctions without Floquet-Andreev states
D. Z. Haxell, M. Coraiola, D. Sabonis +9
Light-matter interaction enables engineering of non-equilibrium quantum systems. In condensed matter, spatially and temporally cyclic Hamiltonians are expected to generate energy-p…
The Berezinskii-Kosterlitz-Thouless Transition and Anomalous Metallic Phase in a Hybrid Josephson Junction Array
C. G. L. Bøttcher, F. Nichele, J. Shabani +2
We investigate the Berezinskii-Kosterlitz-Thouless (BKT) transition in a semiconductor-superconductor two-dimensional Josephson junction array. Tuned by an electrostatic top gate,…
Large even-odd spacing and -factor anisotropy in PbTe quantum dots
S. C. ten Kate, M. F. Ritter, A. Fuhrer +5
PbTe is a semiconductor with promising properties for topological quantum computing applications. Here we characterize quantum dots in PbTe nanowires selectively grown on InP. Char…
Ubiquitous Superconducting Diode Effect in Superconductor Thin Films
Yasen Hou, Fabrizio Nichele, Hang Chi +13
The macroscopic coherence in superconductors supports dissipationless supercurrents which could play a central role in emerging quantum technologies. Accomplishing unequal supercur…
Measurements of Phase Dynamics in Planar Josephson Junctions and SQUIDs
D. Z. Haxell, E. Cheah, F. Křížek +8
We experimentally investigate the stochastic phase dynamics of planar Josephson junctions (JJs) and superconducting quantum interference devices (SQUIDs) defined in epitaxial InAs/…
Semiconductor Epitaxy in Superconducting Templates
M. F. Ritter, H. Schmid, M. Sousa +7
Integration of high quality semiconductor-superconductor devices into scalable and CMOS compatible architectures remains an outstanding challenge, currently hindering their practic…
On the Role of Out-of-Equilibrium Phonons in Gated Superconducting Switches
M. F. Ritter, N. Crescini, D. Z. Haxell +5
Recent experiments suggest the possibility to tune superconductivity in metallic nanowires by application of modest gate voltages. It is largely debated whether the effect is due t…
Anodic Oxidation of Epitaxial Superconductor-Semiconductor Hybrids
Asbjørn C. C. Drachmann, Rosa E. Diaz, Candice Thomas +10
We demonstrate a new fabrication process for hybrid semiconductor-superconductor heterostructures based on anodic oxidation (AO), allowing controlled thinning of epitaxial Al films…
A superconducting switch actuated by injection of high energy electrons
M. F. Ritter, A. Fuhrer, D. Z. Haxell +4
Fast cryogenic switches with ultra-low power dissipation are highly sought-after for control electronics of quantum computers, space applications and next generation logic circuits…
Coherent transport through a Majorana island in an Aharonov-Bohm interferometer
A. M. Whiticar, A. Fornieri, E. C. T. O'Farrell +9
Majorana zero modes are leading candidates for topological quantum computation due to non-local qubit encoding and non-abelian exchange statistics. Spatially separated Majorana mod…
Evidence of topological superconductivity in planar Josephson junctions
Antonio Fornieri, Alexander M. Whiticar, F. Setiawan +13
Majorana zero modes are quasiparticle states localized at the boundaries of topological superconductors that are expected to be ideal building blocks for fault-tolerant quantum com…
Hybridization of sub-gap states in one-dimensional superconductor/semiconductor Coulomb islands
E. C. T. O'Farrell, A. C. C. Drachmann, M. Hell +10
We present measurements of one-dimensional superconductor-semiconductor Coulomb islands, fabricated by gate confinement of a two-dimensional InAs heterostructure with an epitaxial…
Superconducting, Insulating, and Anomalous Metallic Regimes in a Gated Two-Dimensional Semiconductor-Superconductor Array
C. G. L. Bøttcher, F. Nichele, M. Kjaergaard +4
The superconductor-insulator transition in two dimensions has been widely investigated as a paradigmatic quantum phase transition. The topic remains controversial, however, because…
Scaling of Majorana Zero-Bias Conductance Peaks
Fabrizio Nichele, Asbjorn C. C. Drachmann, Alexander M. Whiticar +11
We report an experimental study of the scaling of zero-bias conductance peaks compatible with Majorana zero modes as a function of magnetic field, tunnel coupling, and temperature…
Transport studies of epi-Al/InAs 2DEG systems for required building-blocks in topological superconductor networks
Joon Sue Lee, Borzoyeh Shojaei, Mihir Pendharkar +7
One-dimensional (1D) electronic transport and induced superconductivity in semiconductor nano-structures are crucial ingredients to realize topological superconductivity. Our appro…
Zero-Energy Modes from Coalescing Andreev States in a Two-Dimensional Semiconductor-Superconductor Hybrid Platform
Henri J. Suominen, Morten Kjaergaard, Alexander R. Hamilton +4
We investigate zero-bias conductance peaks that arise from coalescing subgap Andreev states, consistent with emerging Majorana zero modes, in hybrid semiconductor-superconductor wi…