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 …

Quantum metrology assisted by machine learning

J Huang, M Zhuang, J Zhou, Y Shen… - Advanced Quantum …, 2024‏ - Wiley Online Library
Quantum metrology aims to measure physical quantities based on fundamental quantum
principles, enhancing measurement precision through resources like quantum …

Quantum metrology with boundary time crystals

V Montenegro, MG Genoni, A Bayat… - Communications …, 2023‏ - nature.com
Quantum sensing is one of the arenas that exemplifies the superiority of quantum
technologies over their classical counterparts. Such superiority, however, can be diminished …

Introduction to theoretical and experimental aspects of quantum optimal control

Q Ansel, E Dionis, F Arrouas… - Journal of Physics B …, 2024‏ - iopscience.iop.org
Quantum optimal control (QOC) is a set of methods for designing time-varying
electromagnetic fields to perform operations in quantum technologies. This tutorial paper …

Optimal control strategies for parameter estimation of quantum systems

Q Ansel, E Dionis, D Sugny - SciPost Physics, 2024‏ - scipost.org
Optimal control theory is an effective tool to improve parameter estimation of quantum
systems. Different methods can be employed for the design of the control protocol. They can …

Quantum metrology and sensing with many-body systems

V Montenegro, C Mukhopadhyay, R Yousefjani… - arxiv preprint arxiv …, 2024‏ - arxiv.org
The main power of quantum sensors is achieved when the probe is composed of several
particles. In this situation, quantum features such as entanglement contribute in enhancing …

Quantum control modelling, methods, and applications

NB Dehaghani, FL Pereira, AP Aguiar - Extensive Reviews, 2022‏ - journals.aijr.org
This review concerns quantum control results and methods that, over the years, have been
used in the various operations involving quantum systems. Most of these methods have …

Application of Pontryagin's maximum principle to quantum metrology in dissipative systems

C Lin, Y Ma, D Sels - Physical Review A, 2022‏ - APS
Optimal control theory, also known as Pontryagin's maximum principle, is applied to the
quantum parameter estimation in the presence of decoherence. An efficient procedure is …

Quantum optimal control via semi-automatic differentiation

MH Goerz, SC Carrasco, VS Malinovsky - Quantum, 2022‏ - quantum-journal.org
We develop a framework of" semi-automatic differentiation" that combines existing gradient-
based methods of quantum optimal control with automatic differentiation. The approach …

Optimal control and selectivity of qubits in contact with a structured environment

Q Ansel, J Fischer, D Sugny, B Bellomo - Physical Review A, 2022‏ - APS
We present a theoretical study of the optimal control of a qubit interacting with a structured
environment. We consider a model system in which the bath is a bosonic reservoir at zero …