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 …

Diagnosing barren plateaus with tools from quantum optimal control

M Larocca, P Czarnik, K Sharma, G Muraleedharan… - Quantum, 2022 - quantum-journal.org
Abstract Variational Quantum Algorithms (VQAs) have received considerable attention due
to their potential for achieving near-term quantum advantage. However, more work is …

The optimization landscape of hybrid quantum–classical algorithms: From quantum control to NISQ applications

X Ge, RB Wu, H Rabitz - Annual Reviews in Control, 2022 - Elsevier
This review investigates the landscapes of hybrid quantum–classical optimization algorithms
that are prevalent in many rapidly developing quantum technologies, where the objective …

From pulses to circuits and back again: A quantum optimal control perspective on variational quantum algorithms

AB Magann, C Arenz, MD Grace, TS Ho, RL Kosut… - PRX Quantum, 2021 - APS
The last decade has witnessed remarkable progress in the development of quantum
technologies. Although fault-tolerant devices likely remain years away, the noisy …

Progress toward favorable landscapes in quantum combinatorial optimization

J Lee, AB Magann, HA Rabitz, C Arenz - Physical Review A, 2021 - APS
The performance of variational quantum algorithms relies on the success of using quantum
and classical computing resources in tandem. Here, we study how these quantum and …

Lyapunov-control-inspired strategies for quantum combinatorial optimization

AB Magann, KM Rudinger, MD Grace, M Sarovar - Physical Review A, 2022 - APS
The prospect of using quantum computers to solve combinatorial optimization problems via
the quantum approximate optimization algorithm (QAOA) has attracted considerable interest …

Butterfly network coding based on bidirectional hybrid controlled quantum communication

J Zhang, M Jiang - Quantum Information Processing, 2022 - Springer
Fusing the ideas of bidirectional hybrid controlled quantum communication and quantum
network coding, we put forward a protocol for implementing butterfly network coding by …

Tomography of Quantum States from Structured Measurements via quantum-aware transformer

H Ma, Z Sun, D Dong, C Chen, H Rabitz - arXiv preprint arXiv:2305.05433, 2023 - arxiv.org
Quantum state tomography (QST) is the process of reconstructing the state of a quantum
system (mathematically described as a density matrix) through a series of different …

Improved quantum state tomography for systems with couplings and readouts

T Xin - Physical Review A, 2020 - APS
Quantum device characterization via state tomography plays an important role in both
validating quantum hardware and processing quantum information, but it needs the …

Hamiltonian quantum generative adversarial networks

L Kim, S Lloyd, M Marvian - Physical Review Research, 2024 - APS
We propose Hamiltonian quantum generative adversarial networks (HQuGANs) to learn to
generate unknown input quantum states using two competing quantum optimal controls. The …