253 citations · 1.2k across the 17 of their papers we have counts for
17 papers
Optimizing the frequency positioning of tunable couplers in a circuit QED processor to mitigate spectator effects on quantum operations
S. Vallés-Sanclemente, T. H. F. Vroomans, T. R. van Abswoude +8
We experimentally optimize the frequency of flux-tunable couplers in a superconducting quantum processor to minimize the impact of spectator transmons during quantum operations (si…
Towards European Standards for Quantum Technologies
O. van Deventer, N. Spethmann, M. Loeffler +21
The Second Quantum Revolution facilitates the engineering of new classes of sensors, communication technologies, and computers with unprecedented capabilities. Supply chains for qu…
A practical guide for building superconducting quantum devices
Yvonne Y. Gao, M. Adriaan Rol, Steven Touzard +1
Quantum computing offers a powerful new paradigm of information processing that has the potential to transform a wide range of industries. In the pursuit of the tantalizing promise…
Variational preparation of finite-temperature states on a quantum computer
R. Sagastizabal, S. P. Premaratne, B. A. Klaver +13
The preparation of thermal equilibrium states is important for the simulation of condensed-matter and cosmology systems using a quantum computer. We present a method to prepare suc…
OpenQL : A Portable Quantum Programming Framework for Quantum Accelerators
N. Khammassi, I. Ashraf, J. v. Someren +6
With the potential of quantum algorithms to solve intractable classical problems, quantum computing is rapidly evolving and more algorithms are being developed and optimized. Expre…
Enhancing a Near-Term Quantum Accelerator's Instruction Set Architecture for Materials Science Applications
Xiang Zou, Shavindra P. Premaratne, M. Adriaan Rol +7
Quantum computers with tens to hundreds of noisy qubits are being developed today. To be useful for real-world applications, we believe that these near-term systems cannot simply b…
Time-domain characterization and correction of on-chip distortion of control pulses in a quantum processor
M. A. Rol, L. Ciorciaro, F. K. Malinowski +7
We introduce Cryoscope, a method for sampling on-chip baseband pulses used to dynamically control qubit frequency in a quantum processor. We specifically use Cryoscope to measure t…
Protecting quantum entanglement from leakage and qubit errors via repetitive parity measurements
C. C. Bultink, T. E. O'Brien, R. Vollmer +9
Protecting quantum information from errors is essential for large-scale quantum computation. Quantum error correction (QEC) encodes information in entangled states of many qubits,…
A fast, low-leakage, high-fidelity two-qubit gate for a programmable superconducting quantum computer
M. A. Rol, F. Battistel, F. K. Malinowski +8
A common approach to realize conditional-phase (CZ) gates in transmon qubits relies on flux control of the qubit frequency to make computational states interact with non-computatio…
Error Mitigation by Symmetry Verification on a Variational Quantum Eigensolver
R. Sagastizabal, X. Bonet-Monroig, M. Singh +11
Variational quantum eigensolvers offer a small-scale testbed to demonstrate the performance of error mitigation techniques with low experimental overhead. We present successful err…
eQASM: An Executable Quantum Instruction Set Architecture
X. Fu, L. Riesebos, M. A. Rol +13
A widely-used quantum programming paradigm comprises of both the data flow and control flow. Existing quantum hardware cannot well support the control flow, significantly limiting…
Evolution of Nanowire Transmons and Their Quantum Coherence in Magnetic Field
F. Luthi, T. Stavenga, O. W. Enzing +8
We present an experimental study of nanowire transmons at zero and applied in-plane magnetic field. With Josephson non-linearities provided by the nanowires, our qubits operate at…
An Experimental Microarchitecture for a Superconducting Quantum Processor
X. Fu, M. A. Rol, C. C. Bultink +10
Quantum computers promise to solve certain problems that are intractable for classical computers, such as factoring large numbers and simulating quantum systems. To date, research…
Capacity estimation and verification of quantum channels with arbitrarily correlated errors
Corsin Pfister, M. Adriaan Rol, Atul Mantri +2
One of the main figures of merit for quantum memories and quantum communication devices is their quantum capacity. It has been studied for arbitrary kinds of quantum channels, but…
Restless Tuneup of High-Fidelity Qubit Gates
M. A. Rol, C. C. Bultink, T. E. O'Brien +11
We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constru…
Active resonator reset in the nonlinear dispersive regime of circuit QED
C. C. Bultink, M. A. Rol, T. E. O'Brien +8
We present two pulse schemes for actively depleting measurement photons from a readout resonator in the nonlinear dispersive regime of circuit QED. One method uses digital feedback…
Repeated quantum error correction on a continuously encoded qubit by real-time feedback
Julia Cramer, Norbert Kalb, M. Adriaan Rol +6
Reliable quantum information processing in the face of errors is a major fundamental and technological challenge. Quantum error correction protects quantum states by encoding a log…