399 citations · 2.2k across the 25 of their papers we have counts for
26 papers
Operating semiconductor qubits without individual barrier gates
A. S. Ivlev, D. R. Crielaard, M. Meyer +8
Semiconductor spin qubits have emerged as a promising platform for quantum computing, following a significant improvement in their control fidelities over recent years. Increasing…
Exploiting epitaxial strained germanium for scaling low noise spin qubits at the micron-scale
Lucas E. A. Stehouwer, Cécile X. Yu, Barnaby van Straaten +10
Disorder in the heterogeneous material stack of semiconductor spin qubit systems introduces noise that compromises quantum information processing, posing a challenge to coherently…
Operating semiconductor quantum processors with hopping spins
Chien-An Wang, Valentin John, Hanifa Tidjani +16
Qubits that can be efficiently controlled are essential for the development of scalable quantum hardware. While resonant control is used to execute high-fidelity quantum gates, the…
Coherent spin qubit shuttling through germanium quantum dots
Floor van Riggelen-Doelman, Chien-An Wang, Sander L. de Snoo +7
Quantum links can interconnect qubit registers and are therefore essential in networked quantum computing. Semiconductor quantum dot qubits have seen significant progress in the hi…
Bichromatic Rabi Control of Semiconductor Qubits
Valentin John, Francesco Borsoi, Zoltán György +9
Electrically driven spin resonance is a powerful technique for controlling semiconductor spin qubits. However, it faces challenges in qubit addressability and off-resonance driving…
Electrical operation of planar Ge hole spin qubits in an in-plane magnetic field
Abhikbrata Sarkar, Zhanning Wang, Mathew Rendell +9
In this work we present a comprehensive theory of spin physics in planar Ge hole quantum dots in an in-plane magnetic field, where the orbital terms play a dominant role in qubit p…
Sweet-spot operation of a germanium hole spin qubit with highly anisotropic noise sensitivity
N. W. Hendrickx, L. Massai, M. Mergenthaler +5
Spin qubits defined by valence band hole states comprise an attractive candidate for quantum information processing due to their inherent coupling to electric fields enabling fast…
Electrical control of uniformity in quantum dot devices
Marcel Meyer, Corentin Déprez, Timo R. van Abswoude +9
Highly uniform quantum systems are essential for the practical implementation of scalable quantum processors. While quantum dot spin qubits based on semiconductor technology are a…
Shared control of a 16 semiconductor quantum dot crossbar array
Francesco Borsoi, Nico W. Hendrickx, Valentin John +6
The efficient control of a large number of qubits is one of most challenging aspects for practical quantum computing. Current approaches in solid-state quantum technology are based…
Probing resonating valence bonds on a programmable germanium quantum simulator
Chien-An Wang, Corentin Déprez, Hanifa Tidjani +5
Simulations using highly tunable quantum systems may enable investigations of condensed matter systems beyond the capabilities of classical computers. Quantum dots and donors in se…
Phase flip code with semiconductor spin qubits
F. van Riggelen, W. I. L. Lawrie, M. Russ +6
The fault-tolerant operation of logical qubits is an important requirement for realizing a universal quantum computer. Spin qubits based on quantum dots have great potential to be…
Simultaneous single-qubit driving of semiconductor spin qubits at the fault-tolerant threshold
W. I. L. Lawrie, M. Rimbach-Russ, F. van Riggelen +6
Practical Quantum computing hinges on the ability to control large numbers of qubits with high fidelity. Quantum dots define a promising platform due to their compatibility with se…
Single-Hole Pump in Germanium
A. Rossi, N. W. Hendrickx, A. Sammak +3
Single-charge pumps are the main candidates for quantum-based standards of the unit ampere because they can generate accurate and quantized electric currents. In order to approach…
A four-qubit germanium quantum processor
N. W. Hendrickx, W. I. L. Lawrie, M. Russ +6
The prospect of building quantum circuits using advanced semiconductor manufacturing positions quantum dots as an attractive platform for quantum information processing. Extensive…
A two-dimensional array of single-hole quantum dots
F. van Riggelen, N. W. Hendrickx, W. I. L. Lawrie +4
Quantum dots fabricated using techniques and materials that are compatible with semiconductor manufacturing are promising for quantum information processing. While great progress h…
Low percolation density and charge noise with holes in germanium
M. Lodari, N. W. Hendrickx, W. I. L. Lawrie +5
We engineer planar Ge/SiGe heterostructures for low disorder and quiet hole quantum dot operation by positioning the strained Ge channel 55~nm below the semiconductor/dielectric in…
Spin relaxation benchmarks and individual qubit addressability for holes in quantum dots
W. I. L. Lawrie, N. W. Hendrickx, F. van Riggelen +5
We investigate hole spin relaxation in the single- and multi-hole regime in a 2x2 germanium quantum dot array. We use radiofrequency (rf) charge sensing and observe Pauli Spin-Bloc…
A single-hole spin qubit
N. W. Hendrickx, W. I. L. Lawrie, L. Petit +3
Qubits based on quantum dots have excellent prospects for scalable quantum technology due to their inherent compatibility with standard semiconductor manufacturing. While early on…
Universal quantum logic in hot silicon qubits
L. Petit, H. G. J. Eenink, M. Russ +5
Quantum computation requires many qubits that can be coherently controlled and coupled to each other. Qubits that are defined using lithographic techniques are often argued to be p…
Quantum Dot Arrays in Silicon and Germanium
W. I. L. Lawrie, H. G. J. Eenink, N. W. Hendrickx +15
Electrons and holes confined in quantum dots define an excellent building block for quantum emergence, simulation, and computation. In order for quantum electronics to become pract…
Fast two-qubit logic with holes in germanium
N. W. Hendrickx, D. P. Franke, A. Sammak +2
The promise of quantum computation with quantum dots has stimulated widespread research. Still, a platform that can combine excellent control with fast and high-fidelity operation…
Low disordered, stable, and shallow germanium quantum wells: a playground for spin and hybrid quantum technology
A. Sammak, D. Sabbagh, N. W. Hendrickx +10
Buried-channel semiconductor heterostructures are an archetype material platform to fabricate gated semiconductor quantum devices. Sharp confinement potential is obtained by positi…
Ballistic supercurrent discretization and micrometer-long Josephson coupling in germanium
N. W. Hendrickx, M. L. V. Tagliaferri, M. Kouwenhoven +6
We fabricate Josephson field-effect-transistors in germanium quantum wells contacted by superconducting aluminum and demonstrate supercurrents carried by holes that extend over jun…
Gate-controlled quantum dots and superconductivity in planar germanium
N. W. Hendrickx, D. P. Franke, A. Sammak +9
Superconductors and semiconductors are crucial platforms in the field of quantum computing. They can be combined to hybrids, bringing together physical properties that enable the d…