[HTML][HTML] Short-depth QAOA circuits and quantum annealing on higher-order ising models

E Pelofske, A Bärtschi, S Eidenbenz - npj Quantum Information, 2024 - nature.com
We present a direct comparison between QAOA (Quantum Alternating Operator Ansatz), and
QA (Quantum Annealing) on 127 qubit problem instances. QAOA with p= 1, 2 rounds is …

Counterdiabatic driving in the quantum annealing of the -spin model: A variational approach

G Passarelli, V Cataudella, R Fazio, P Lucignano - Physical Review Research, 2020 - APS
Finding the exact counterdiabatic potential is, in principle, particularly demanding. Following
recent progress about variational strategies to approximate the counterdiabatic operator, in …

Genetic optimization of quantum annealing

PR Hegde, G Passarelli, A Scocco, P Lucignano - Physical Review A, 2022 - APS
The study of optimal control of quantum annealing by modulating the pace of evolution and
by introducing a counterdiabatic potential has gained significant attention in recent times. In …

[HTML][HTML] When quantum annealing meets multitasking: Potentials, challenges and opportunities

T Huang, Y Zhu, RSM Goh, T Luo - Array, 2023 - Elsevier
Quantum computers have provided a promising tool for tackling NP hard problems.
However, most of the existing work on quantum annealers assumes exclusive access to all …

Designing quantum annealing schedules using Bayesian optimization

JR Finžgar, MJA Schuetz, JK Brubaker, H Nishimori… - Physical Review …, 2024 - APS
We propose and analyze the use of Bayesian optimization techniques to design quantum
annealing schedules with minimal user and resource requirements. We showcase our …

Dynamics of reverse annealing for the fully connected -spin model

Y Yamashiro, M Ohkuwa, H Nishimori, DA Lidar - Physical Review A, 2019 - APS
Reverse annealing is a relatively new variant of quantum annealing in which one starts from
a classical state and increases and then decreases the amplitude of the transverse field, in …

Reverse quantum annealing of the -spin model with relaxation

G Passarelli, KW Yip, DA Lidar, H Nishimori… - Physical Review A, 2020 - APS
In reverse quantum annealing, the initial state is an eigenstate of the final problem
Hamiltonian and the transverse field is cycled rather than strictly decreased as in standard …

Comparing three generations of d-wave quantum annealers for minor embedded combinatorial optimization problems

E Pelofske - Quantum Science and Technology, 2023 - iopscience.iop.org
Quantum annealing is a novel type of analog computation that aims to use quantum
mechanical fluctuations to search for optimal solutions of Ising problems. Quantum …

Why and when pausing is beneficial in quantum annealing

H Chen, DA Lidar - Physical Review Applied, 2020 - APS
Recent empirical results using quantum-annealing hardware have shown that midanneal
pausing has a surprisingly beneficial impact on the probability of finding the ground state for …

Optimal quantum annealing: A variational shortcut-to-adiabaticity approach

G Passarelli, R Fazio, P Lucignano - Physical Review A, 2022 - APS
Suppressing unwanted transitions out of the instantaneous ground state is a major
challenge in unitary adiabatic quantum computation. A recent approach consists in building …