64 citations · 438 across the 23 of their papers we have counts for
25 papers
Enhanced superconducting diode effect in hybrid Josephson junctions
Peng Yu, Han Fu, William F. Schiela +7
The superconducting diode effect (SDE) has recently been observed in various systems, sparking interest in novel superconducting devices and offering a new platform to probe intrin…
Gate-tunable polarity inversions and three-fold rotation symmetry of the superconducting diode effect
William F. Schiela, Melissa Mikalsen, Daniel Crawford +4
The superconducting diode effect is an asymmetry in the critical current with respect to the supercurrent polarity. One impetus driving recent interest in the effect is its depende…
Geometric dependence of critical current magnitude and nonreciprocity in planar Josephson junctions
William F. Schiela, Melissa Mikalsen, William M. Strickland +1
Planar Josephson junctions in a magnetic field exhibit the superconducting diode effect, by which the critical current magnitude depends on the polarity of the transport current. A…
Machine learning analysis of structural data to predict electronic properties in near-surface InAs quantum wells
Patrick J. Strohbeen, Abtin Abbaspour, Amara Keita +12
Semiconductor crosshatch patterns in thin film heterostructures form as a result of strain relaxation processes and dislocation pile-ups during growth of lattice mismatched materia…
Microwave radiometry of a quantum-critical, hybrid Josephson array
Kristen W. Léonard, Anton V. Bubis, Melissa Mikalsen +6
Arrays of Josephson junctions can be tuned through anomalous metallic, quantum-critical, and insulating regimes. We introduce a new experimental probe, capturing microwave radiatio…
Microwave Andreev bound state spectroscopy in a semiconductor-based Planar Josephson junction
Bassel Heiba Elfeky, Krishna Dindial, David S. Brandão +13
By coupling a semiconductor-based planar Josephson junction to a superconducting resonator, we investigate the Andreev bound states in the junction using dispersive readout techniq…
Gatemonium: A Voltage-Tunable Fluxonium
William M. Strickland, Bassel Heiba Elfeky, Lukas Baker +6
We present a new style of fluxonium qubit, gatemonium, based on an all superconductorsemiconductor hybrid platform. The linear inductance is achieved using six hundred planar Al-In…
Gate tunable enhancement of supercurrent in hybrid planar Josephson junctions
Peng Yu, Han Fu, William F. Schiela +6
Planar Josephson junctions (JJs) have emerged as a promising platform for the realization of topological superconductivity and Majorana zero modes. To obtain robust quasi one-dimen…
Kerr nonlinearity and parametric amplification with an Al-InAs superconductor-semiconductor Josephson junction
Z. Hao, T. Shaw, M. Hatefipour +5
Nearly quantum limited Josephson parametric amplifiers (JPAs) are essential components in superconducting quantum circuits. However, higher order nonlinearities of the Josephson co…
Andreev reflection of quantum Hall states through a quantum point contact
Mehdi Hatefipour, Joseph J. Cuozzo, Ido Levy +4
We investigate the interplay between the quantum Hall (QH) effect and superconductivity in InAs surface quantum well (SQW)/NbTiN heterostructures using a quantum point contact (QPC…
Characterizing losses in InAs two-dimensional electron gas-based gatemon qubits
William M. Strickland, Lukas J. Baker, Jaewoo Lee +9
The tunnelling of cooper pairs across a Josephson junction (JJ) allow for the nonlinear inductance necessary to construct superconducting qubits, amplifiers, and various other quan…
Quasiparticle dynamics in epitaxial Al-InAs planar Josephson junctions
Bassel Heiba Elfeky, William M. Strickland, Jaewoo Lee +7
Quasiparticle (QP) effects play a significant role in the coherence and fidelity of superconducting quantum circuits. The Andreev bound states of high transparency Josephson juncti…
Superconducting Diode Effect Sign Change in Epitaxial Al-InAs Josepshon Junctions
Neda Lotfizadeh, William F. Schiela, Barış Pekerten +5
There has recently been a surge of interest in studying the superconducting diode effect (SDE) partly due to the possibility of uncovering the intrinsic properties of a material sy…
Tunable Capacitor For Superconducting Qubits Using an InAs/InGaAs Heterostructure
Nicholas Materise, Matthieu C. Dartiailh, William M. Strickland +2
Adoption of fast, parametric coupling elements has improved the performance of superconducting qubits, enabling recent demonstrations of quantum advantage in randomized sampling pr…
Evolution of -periodic Supercurrent in the Presence of In-plane Magnetic Field
Bassel Heiba Elfeky, Joseph J. Cuozzo, Neda Lotfizadeh +5
In the presence of a 4-periodic contribution to the current phase relation, for example in topological Josephson junctions, odd Shapiro steps are expected to be missing. While m…
Superconducting resonators with voltage-controlled frequency and nonlinearity
William M. Strickland, Bassel Heiba Elfeky, Joseph O'Connell Yuan +6
Voltage-tunable superconductor-semiconductor devices offer a unique platform to realize dynamic tunability in superconducting quantum circuits. By galvanically connecting a gated I…
Magneto-anisotropic weak antilocalization in near-surface quantum wells
S. M. Farzaneh, Mehdi Hatefipour, William F. Schiela +6
We investigate the effects of an in-plane magnetic field on the weak antilocalization signature of near-surface quantum wells lacking bulk and inversion symmetry. The measured magn…
Controlling Fermi level pinning in near-surface InAs quantum wells
William M. Strickland, Mehdi Hatefipour, Dylan Langone +2
Hybrid superconductor-semiconductor heterostructures are a promising platform for quantum devices based on mesoscopic and topological superconductivity. In these structures, a semi…
Gate-tunable, superconductor-semiconductor parametric amplifier
D. Phan, P. Falthansl-Scheinecker, U. Mishra +4
We have built a parametric amplifier with a Josephson field effect transistor (JoFET) as the active element. The device's resonant frequency is field-effect tunable over a range of…
Induced superconducting pairing in integer quantum Hall edge states
Mehdi Hatefipour, Joseph J. Cuozzo, Jesse Kanter +5
Indium Arsenide (InAs) near surface quantum wells (QWs) are promising for the fabrication of semiconductor-superconductor heterostructures given that they allow for a strong hybrid…
Local Control of Supercurrent Density in Epitaxial Planar Josephson Junctions
Bassel H. Elfeky, Neda Lotfizadeh, William F. Schiela +9
The critical current response to an applied out-of-plane magnetic field in a Josephson junction provides insight into the uniformity of its current distribution. In Josephson junct…
Detecting induced pairing at the Al-InAs interface with a quantum microwave circuit
D. Phan, J. Senior, A. Ghazaryan +5
Superconductor-semiconductor hybrid devices are at the heart of several proposed approaches to quantum information processing, but their basic properties remain to be understood. W…
Epitaxial Superconductor-Semiconductor Two-Dimensional Systems for Superconducting Quantum Circuits
Joseph O'Connell Yuan, Kaushini S. Wickramasinghe, William M. Strickland +4
Qubits on solid state devices could potentially provide the rapid control necessary for developing scalable quantum information processors. Materials innovation and design breakthr…
Order-Disorder Ferroelectric Transition of Strained SrTiO3
Salva Salmani-Rezaie, Kaveh Ahadi, William M. Strickland +1
SrTiO3 is an incipient ferroelectric that is believed to exhibit a prototype displacive, soft mode ferroelectric transition when subjected to mechanical stress or alloying. We use…