403 citations · 901 across the 15 of their papers we have counts for
16 papers
Realization of Very High Mobility InAs Quantum Wells on InP Substrates Through Convex InAlAs Graded Buffer Optimization
Tyler Lindemann, Rojila Ghimire, Alejandro Alcaraz Ramirez +4
Due to strong spin-orbit coupling, large Landé -factor, and a highly transparent interface, the two-dimensional electron gas (2DEG) in InAs quantum wells provides an ideal platf…
20 Second Parity Lifetime in an InAs--Pb Tetron Device
Morteza Aghaee, Zulfi Alam, Mariusz Andrzejczuk +162
A central promise of topological quantum computing is that increasing the excitation gap improves device performance significantly. Here, we experimentally validate this principle…
Shubnikov-de Haas Characterization of Superconductor-Semiconductor Heterostructures
A. M. Zimmerman, Saeed Fallahi, Sergei Gronin +13
Hybrid superconductor-semiconductor nanostructures are a central component for research spanning condensed matter physics and quantum information processing. Continued progress rel…
Distinct Lifetimes for and Loop Measurements in a Majorana Tetron Device
Morteza Aghaee, Zulfi Alam, Rikke Andersen +164
We present a hardware realization and measurements of a tetron qubit device in a superconductor-semiconductor heterostructure. The device architecture contains two parallel superco…
Response to recent comments on Phys. Rev. B 107, 245423 (2023) and Subsection S4.3 of the Supp. Info. for Nature 638, 651-655 (2025)
Morteza Aghaee, Zulfi Alam, Mariusz Andrzejczuk +127
The topological gap protocol (TGP) is a statistical test designed to identify a topological phase with high confidence and without human bias. It is used to determine a promising p…
Roadmap to fault tolerant quantum computation using topological qubit arrays
David Aasen, Morteza Aghaee, Zulfi Alam +179
We describe a concrete device roadmap towards a fault-tolerant quantum computing architecture based on noise-resilient, topologically protected Majorana-based qubits. Our roadmap e…
Interferometric Single-Shot Parity Measurement in an InAs-Al Hybrid Device
Morteza Aghaee, Alejandro Alcaraz Ramirez, Zulfi Alam +159
The fusion of non-Abelian anyons or topological defects is a fundamental operation in measurement-only topological quantum computation. In topological superconductors, this operati…
Local and Non-local Microwave Impedance of a Three-Terminal Hybrid Device
B. Harlech-Jones, S. J. Waddy, J. D. S. Witt +8
We report microwave impedance measurements of a superconductor-semiconductor hybrid nanowire device with three terminals (3T). Our technique makes use of transmission line resonato…
InAs-Al Hybrid Devices Passing the Topological Gap Protocol
Morteza Aghaee, Arun Akkala, Zulfi Alam +124
We present measurements and simulations of semiconductor-superconductor heterostructure devices that are consistent with the observation of topological superconductivity and Majora…
Closing of the Induced Gap in a Hybrid Superconductor-Semiconductor Nanowire
D. Puglia, E. A. Martinez, G. C. Ménard +8
Hybrid superconductor-semiconductor nanowires are predicted to undergo a field-induced phase transition from a trivial to a topological superconductor, marked by the closure and re…
Stable quantum dots in an InSb two-dimensional electron gas
Ivan Kulesh, Chung Ting Ke, Candice Thomas +7
Indium antimonide (InSb) two-dimensional electron gases (2DEGs) have a unique combination of material properties: high electron mobility, strong spin-orbit interaction, large Landé…
Ballistic superconductivity and tunable -junctions in InSb quantum wells
Chung Ting Ke, Christian M. Moehle, Folkert K. de Vries +11
Two-dimensional electron gases (2DEGs) coupled to superconductors offer the opportunity to explore a variety of quantum phenomena. These include the study of novel Josephson effect…
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…
High mobility InAs 2DEGs on GaSb substrates: a platform for mesoscopic quantum transport
C. Thomas, A. T. Hatke, A. Tuaz +7
High mobility, strong spin-orbit coupling, and large Landé g-factor make the two-dimensional electron gas (2DEG) in InAs quantum wells grown on nearly-lattice-matched GaSb substrat…
Measurement of the spin polarization of the magnetic semiconductor EuS with zero-field and Zeeman-split Andreev reflection spectroscopy
Cong Ren, J. Trbovic, R. L. Kallaher +4
We report measurements of the spin polarization (\textbf{\textit{P}}) of the concentrated magnetic semiconductor EuS using both zero-field and Zeeman-split Andreev reflection spect…