975 citations · 5.9k across the 31 of their papers we have counts for
31 papers
Optimising Cryogenic Wiring for Microwave-frequency Millikelvin Quantum Processors
Adrien Di Lonardo, Giorge Gemisis, Juan Pablo Dehollain +1
Cryogenic capacity is a key bottleneck in the scaling of superconducting quantum processors, critically impacted by control wiring. Currently, wiring architectures are often design…
Optimal operating temperature for industry-compatible silicon spin quantum computing: colder is not necessarily better
Paul Steinacker, Amanda E. Seedhouse, Nard Dumoulin Stuyck +22
Silicon spin qubits are a leading candidate for large-scale quantum computing owing to their compatibility with semiconductor manufacturing. However, scaling to useful fault-tolera…
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…
Quantum Chaos and Universal Trotterisation Behaviours in Digital Quantum Simulations
Cahit Kargi, Angsar Manatuly, Lukas M. Sieberer +7
Digital quantum simulation (DQS) is one of the most promising paths for achieving first useful real-world applications for quantum processors. Yet even assuming rapid progress in d…
Spiderweb array: A sparse spin-qubit array
Jelmer M. Boter, Juan P. Dehollain, Jeroen P. G. van Dijk +8
One of the main bottlenecks in the pursuit of a large-scale--chip-based quantum computer is the large number of control signals needed to operate qubit systems. As system sizes sca…
Qubits made by advanced semiconductor manufacturing
A. M. J. Zwerver, T. Krähenmann, T. F. Watson +26
Full-scale quantum computers require the integration of millions of quantum bits. The promise of leveraging industrial semiconductor manufacturing to meet this requirement has fuel…
Mesoscopic Elastic Distortions in GaAs Quantum Dot Heterostructures
Anastasios Pateras, Joonkyu Park, Youngjun Ahn +9
Quantum devices formed in high-electron-mobility semiconductor heterostructures provide a route through which quantum mechanical effects can be exploited on length scales accessibl…
A sparse spin qubit array with integrated control electronics
Jelmer M. Boter, Juan P. Dehollain, Jeroen P. G. van Dijk +6
Current implementations of quantum computers suffer from large numbers of control lines per qubit, becoming unmanageable with system scale up. Here, we discuss a sparse spin-qubit…
Ab Initio Exact Diagonalization Simulation of the Nagaoka Transition in Quantum Dots
Yao Wang, Juan Pablo Dehollain, Fang Liu +4
Recent progress of quantum simulators provides insight into the fundamental problems of strongly correlated systems. To adequately assess the accuracy of these simulators, the prec…
Nagaoka ferromagnetism observed in a quantum dot plaquette
Juan P. Dehollain, Uditendu Mukhopadhyay, Vincent P. Michal +7
Engineered, highly-controllable quantum systems hold promise as simulators of emergent physics beyond the capabilities of classical computers. An important problem in many-body phy…
Loading a quantum-dot based "Qubyte" register
C. Volk, A. M. J. Zwerver, U. Mukhopadhyay +8
Electrostatically defined quantum dot arrays offer a compelling platform for quantum computation and simulation. However, tuning up such arrays with existing techniques becomes imp…
A 2x2 quantum dot array with controllable inter-dot tunnel couplings
Uditendu Mukhopadhyay, Juan Pablo Dehollain, Christian Reichl +2
The interaction between electrons in arrays of electrostatically defined quantum dots is naturally described by a Fermi-Hubbard Hamiltonian. Moreover, the high degree of tunability…
A Crossbar Network for Silicon Quantum Dot Qubits
R. Li, L. Petit, D. P. Franke +10
The spin states of single electrons in gate-defined quantum dots satisfy crucial requirements for a practical quantum computer. These include extremely long coherence times, high-f…
Coherent control via weak measurements in P single-atom electron and nuclear spin qubits
J. T. Muhonen, J. P. Dehollain, A. Laucht +8
The understanding of weak measurements and interaction-free measurements has greatly expanded the conceptual and experimental toolbox to explore the quantum world. Here we demonstr…
A single-atom quantum memory in silicon
S. Freer, S. Simmons, A. Laucht +10
Long coherence times and fast gate operations are desirable but often conflicting requirements for physical qubits. This conflict can be resolved by resorting to fast qubits for op…
Optimization of a solid-state electron spin qubit using Gate Set Tomography
Juan P. Dehollain, Juha T. Muhonen, Robin Blume-Kohout +8
State of the art qubit systems are reaching the gate fidelities required for scalable quantum computation architectures. Further improvements in the fidelity of quantum gates deman…
Breaking the rotating wave approximation for a strongly-driven, dressed, single electron spin
Arne Laucht, Stephanie Simmons, Rachpon Kalra +10
We investigate the dynamics of a strongly-driven, microwave-dressed, donor-bound electron spin qubit in silicon. A resonant oscillating magnetic field is used to dress the el…
A Dressed Spin Qubit in Silicon
Arne Laucht, Rachpon Kalra, Stephanie Simmons +10
Coherent dressing of a quantum two-level system provides access to a new quantum system with improved properties - a different and easily tuneable level splitting, faster control,…
Vibration-induced electrical noise in a cryogen-free dilution refrigerator: characterization, mitigation, and impact on qubit coherence
Rachpon Kalra, Arne Laucht, Juan P. Dehollain +5
Cryogen-free low-temperature setups are becoming more prominent in experimental science due to their convenience and reliability, and concern about the increasing scarcity of heliu…
Bell's inequality violation with spins in silicon
Juan P. Dehollain, Stephanie Simmons, Juha T. Muhonen +8
Bell's theorem sets a boundary between the classical and quantum realms, by providing a strict proof of the existence of entangled quantum states with no classical counterpart. An…
Electrically controlling single spin qubits in a continuous microwave field
Arne Laucht, Juha T. Muhonen, Fahd A. Mohiyaddin +12
Large-scale quantum computers must be built upon quantum bits that are both highly coherent and locally controllable. We demonstrate the quantum control of the electron and the nuc…
A Two Qubit Logic Gate in Silicon
M. Veldhorst, C. H. Yang, J. C. C. Hwang +9
Quantum computation requires qubits that can be coupled and realized in a scalable manner, together with universal and high-fidelity one- and two-qubit logic gates \cite{DiVincenzo…
Quantifying the quantum gate fidelity of single-atom spin qubits in silicon by randomized benchmarking
J. T. Muhonen, A. Laucht, S. Simmons +9
Building upon the demonstration of coherent control and single-shot readout of the electron and nuclear spins of individual 31-P atoms in silicon, we present here a systematic expe…
Coherent Control of a Single Silicon-29 Nuclear Spin Qubit
Jarryd J. Pla, Fahd A. Mohiyaddin, Kuan Y. Tan +6
Magnetic fluctuations caused by the nuclear spins of a host crystal are often the leading source of decoherence for many types of solid-state spin qubit. In group-IV materials, the…