455 citations · 1.5k across the 14 of their papers we have counts for
14 papers
Beyond-classical computation in quantum simulation
Andrew D. King, Alberto Nocera, Marek M. Rams +60
Quantum computers hold the promise of solving certain problems that lie beyond the reach of conventional computers. However, establishing this capability, especially for impactful…
Probing flux and charge noise with macroscopic resonant tunneling
Alexander M. Whiticar, Anatoly Y. Smirnov, Trevor Lanting +8
We report on measurements of flux and charge noise in an rf-SQUID flux qubit using macroscopic resonant tunneling (MRT). We measure rates of incoherent tunneling from the lowest en…
Multilevel resonant tunneling in the presence of flux and charge noise
Anatoly Y. Smirnov, Alexander Whiticar, Mohammad H. Amin
Macroscopic resonant tunneling (MRT) in flux qubits is an important experimental tool for extracting information about noise produced by a qubit's surroundings. Here we present a d…
Signatures of a topological phase transition in a planar Josephson junction
A. Banerjee, O. Lesser, M. A. Rahman +12
A growing body of work suggests that planar Josephson junctions fabricated using superconducting hybrid materials provide a highly controllable route toward one-dimensional topolog…
Zeeman-driven parity transitions in an Andreev quantum dot
A. M. Whiticar, A. Fornieri, A. Banerjee +6
The Andreev spectrum of a quantum dot embedded in a hybrid semiconductor-superconductor interferometer can be modulated by electrostatic gating, magnetic flux through the interfero…
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…
Relating Andreev Bound States and Supercurrents in Hybrid Josephson Junctions
F. Nichele, E. Portolés, A. Fornieri +8
We investigate superconducting quantum interference devices consisting of two highly transmissive Josephson junctions coupled by a superconducting loop, all defined in an epitaxial…
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…
Field effect enhancement in buffered quantum nanowire networks
Filip Krizek, Joachim E. Sestoft, Pavel Aseev +15
III-V semiconductor nanowires have shown great potential in various quantum transport experiments. However, realizing a scalable high-quality nanowire-based platform that could lea…
Selective Area Grown Semiconductor-Superconductor Hybrids: A Basis for Topological Networks
S. Vaitiekėnas, A. M. Whiticar, M. T. Deng +8
We introduce selective area grown hybrid InAs/Al nanowires based on molecular beam epitaxy, allowing arbitrary semiconductor-superconductor networks containing loops and branches.…
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…
Annealing of Au, Ag and Au-Ag alloy nanoparticle arrays on GaAs (100) and (111)B
Alexander M. Whiticar, Erik K. Mårtensson, Jesper Nygård +2
Part of developing new strategies for fabrications of nanowire structures involves in many cases the aid of metal nanoparticles (NPs). It is highly beneficial if one can define bot…