Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe

CP Koch, U Boscain, T Calarco, G Dirr… - EPJ Quantum …, 2022 - epjqt.epj.org
Quantum optimal control, a toolbox for devising and implementing the shapes of external
fields that accomplish given tasks in the operation of a quantum device in the best way …

Blueprint for a high-performance fluxonium quantum processor

LB Nguyen, G Koolstra, Y Kim, A Morvan, T Chistolini… - PRX Quantum, 2022 - APS
Transforming stand-alone qubits into a functional, general-purpose quantum processing unit
requires an architecture where many-body quantum entanglement can be generated and …

Demonstrating multi-round subsystem quantum error correction using matching and maximum likelihood decoders

N Sundaresan, TJ Yoder, Y Kim, M Li, EH Chen… - Nature …, 2023 - nature.com
Quantum error correction offers a promising path for performing high fidelity quantum
computations. Although fully fault-tolerant executions of algorithms remain unrealized …

Demonstration of quantum volume 64 on a superconducting quantum computing system

P Jurcevic, A Javadi-Abhari, LS Bishop… - Quantum Science …, 2021 - iopscience.iop.org
We improve the quality of quantum circuits on superconducting quantum computing
systems, as measured by the quantum volume (QV), with a combination of dynamical …

Scalable error mitigation for noisy quantum circuits produces competitive expectation values

Y Kim, CJ Wood, TJ Yoder, ST Merkel, JM Gambetta… - Nature Physics, 2023 - nature.com
Noise in existing quantum processors only enables an approximation to ideal quantum
computation. However, for the computation of expectation values, these approximations can …

OpenQASM 3: A broader and deeper quantum assembly language

A Cross, A Javadi-Abhari, T Alexander… - ACM Transactions on …, 2022 - dl.acm.org
Quantum assembly languages are machine-independent languages that traditionally
describe quantum computation in the circuit model. Open quantum assembly language …

Learning many-body Hamiltonians with Heisenberg-limited scaling

HY Huang, Y Tong, D Fang, Y Su - Physical Review Letters, 2023 - APS
Learning a many-body Hamiltonian from its dynamics is a fundamental problem in physics.
In this Letter, we propose the first algorithm to achieve the Heisenberg limit for learning an …

Open quantum assembly language

AW Cross, LS Bishop, JA Smolin… - arxiv preprint arxiv …, 2017 - arxiv.org
This document describes a quantum assembly language (QASM) called OpenQASM that is
used to implement experiments with low depth quantum circuits. OpenQASM represents …

Exploiting dynamic quantum circuits in a quantum algorithm with superconducting qubits

AD Córcoles, M Takita, K Inoue, S Lekuch, ZK Minev… - Physical Review Letters, 2021 - APS
To date, quantum computation on real, physical devices has largely been limited to simple,
time-ordered sequences of unitary operations followed by a final projective measurement …

Demonstration of a High-Fidelity cnot Gate for Fixed-Frequency Transmons with Engineered Suppression

A Kandala, KX Wei, S Srinivasan, E Magesan… - Physical Review Letters, 2021 - APS
Improving two-qubit gate performance and suppressing cross talk are major, but often
competing, challenges to achieving scalable quantum computation. In particular, increasing …