820 citations · 2.2k across the 15 of their papers we have counts for
15 papers
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…
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…
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…
Nonlocal measurement of quasiparticle charge and energy relaxation in proximitized semiconductor nanowires using quantum dots
Guanzhong Wang, Tom Dvir, Nick van Loo +6
The lowest-energy excitations of superconductors do not carry an electric charge, as their wave function is equally electron-like and hole-like. This fundamental property is not ea…
Quasiparticle trapping by orbital effect in a hybrid superconducting-semiconducting circuit
Willemijn Uilhoorn, James G. Kroll, Arno Bargerbos +6
The tunneling of quasiparticles (QPs) across Josephson junctions (JJs) detrimentally affects the coherence of superconducting and charge-parity qubits, and is shown to occur more f…
Direct microwave measurement of Andreev-bound-state dynamics in a proximitized semiconducting nanowire
M. Hays, G. de Lange, K. Serniak +6
The modern understanding of the Josephson effect in mesosopic devices derives from the physics of Andreev bound states, fermionic modes that are localized in a superconducting weak…
Entanglement genesis by ancilla-based parity measurement in 2D circuit QED
O. -P. Saira, J. P. Groen, J. Cramer +3
We present an indirect two-qubit parity meter in planar circuit quantum electrodynamics, realized by discrete interaction with an ancilla and a subsequent projective ancilla measur…
Reversing quantum trajectories with analog feedback
G. de Lange, D. Ristè, M. J. Tiggelman +6
We demonstrate the active suppression of transmon qubit dephasing induced by dispersive measurement, using parametric amplification and analog feedback. By real-time processing of…
Deterministic entanglement of superconducting qubits by parity measurement and feedback
D. Ristè, M. Dukalski, C. A. Watson +6
The stochastic evolution of quantum systems during measurement is arguably the most enigmatic feature of quantum mechanics. Measuring a quantum system typically steers it towards a…
Comparison of dynamical decoupling protocols for a nitrogen-vacancy center in diamond
Zhi-Hui Wang, G. de Lange, D. Riste +2
We perform a detailed theoretical-experimental study of the dynamical decoupling (DD) of the nitrogen-vacancy (NV) center in diamond. We investigate the DD sequences applied to sup…
Controlling the quantum dynamics of a mesoscopic spin bath in diamond
G. de Lange, T. van der Sar, M. S. Blok +3
Understanding and mitigating decoherence is a key challenge for quantum science and technology. The main source of decoherence for solid-state spin systems is the uncontrolled spin…
Single-spin magnetometry with multi-pulse sensing sequences
G. de Lange, D. Ristè, V. V. Dobrovitski +1
We experimentally demonstrate single-spin magnetometry with multi-pulse sensing sequences. The use of multi-pulse sequences can greatly increase the sensing time per measurement sh…
Universal dynamical decoupling of a single solid-state spin from a spin bath
G. de Lange, Z. H. Wang, D. Ristè +2
Controlling the interaction of a single quantum system with its environment is a fundamental challenge in quantum science and technology. We dramatically suppress the coupling of a…
Bootstrap tomography of high-precision pulses for quantum control
V. V. Dobrovitski, G. de Lange, D. Ristè +1
Long-time dynamical decoupling and quantum control of qubits require high-precision control pulses. Full characterization (quantum tomography) of imperfect pulses presents a bootst…