Quantum many-body simulations on digital quantum computers: State-of-the-art and future challenges

B Fauseweh - Nature Communications, 2024‏ - nature.com
Simulating quantum many-body systems is a key application for emerging quantum
processors. While analog quantum simulation has already demonstrated quantum …

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 …

[HTML][HTML] The quantum technologies roadmap: a European community view

A Acín, I Bloch, H Buhrman, T Calarco… - New Journal of …, 2018‏ - iopscience.iop.org
Within the last two decades, quantum technologies (QT) have made tremendous progress,
moving from Nobel Prize award-winning experiments on quantum physics (1997: Chu …

Quantum information processing with superconducting circuits: a review

G Wendin - Reports on Progress in Physics, 2017‏ - iopscience.iop.org
During the last ten years, superconducting circuits have passed from being interesting
physical devices to becoming contenders for near-future useful and scalable quantum …

Training Schrödinger's cat: Quantum optimal control: Strategic report on current status, visions and goals for research in Europe

SJ Glaser, U Boscain, T Calarco, CP Koch… - The European Physical …, 2015‏ - Springer
It is control that turns scientific knowledge into useful technology: in physics and engineering
it provides a systematic way for driving a dynamical system from a given initial state into a …

Introduction to the Pontryagin maximum principle for quantum optimal control

U Boscain, M Sigalotti, D Sugny - PRX Quantum, 2021‏ - APS
Optimal control theory is a powerful mathematical tool, which has known a rapid
development since the 1950s, mainly for engineering applications. More recently, it has …

Reinforcement learning in different phases of quantum control

M Bukov, AGR Day, D Sels, P Weinberg, A Polkovnikov… - Physical Review X, 2018‏ - APS
The ability to prepare a physical system in a desired quantum state is central to many areas
of physics such as nuclear magnetic resonance, cold atoms, and quantum computing. Yet …

Implementing a universal gate set on a logical qubit encoded in an oscillator

RW Heeres, P Reinhold, N Ofek, L Frunzio… - Nature …, 2017‏ - nature.com
A logical qubit is a two-dimensional subspace of a higher dimensional system, chosen such
that it is possible to detect and correct the occurrence of certain errors. Manipulation of the …

Leakage reduction in fast superconducting qubit gates via optimal control

M Werninghaus, DJ Egger, F Roy, S Machnes… - npj Quantum …, 2021‏ - nature.com
Reaching high-speed, high-fidelity qubit operations requires precise control over the shape
of the underlying pulses. For weakly anharmonic systems, such as superconducting …

Fast machine-learning online optimization of ultra-cold-atom experiments

PB Wigley, PJ Everitt, A van den Hengel, JW Bastian… - Scientific reports, 2016‏ - nature.com
We apply an online optimization process based on machine learning to the production of
Bose-Einstein condensates (BEC). BEC is typically created with an exponential evaporation …