Catalysis in quantum information theory

P Lipka-Bartosik, H Wilming, NHY Ng - Reviews of Modern Physics, 2024 - APS
Catalysts open up new reaction pathways that can speed up chemical reactions while not
consuming the catalyst. A similar phenomenon has been discovered in quantum information …

General probabilistic theories: An introduction

M Plávala - Physics Reports, 2023 - Elsevier
We introduce the framework of general probabilistic theories (GPTs for short). GPTs are a
class of operational theories that generalize both finite-dimensional classical and quantum …

Measurement reduction in variational quantum algorithms

A Zhao, A Tranter, WM Kirby, SF Ung, A Miyake… - Physical Review A, 2020 - APS
Variational quantum algorithms are promising applications of noisy intermediate-scale
quantum (NISQ) computers. These algorithms consist of a number of separate prepare-and …

Quantifying quantum speedups: Improved classical simulation from tighter magic monotones

JR Seddon, B Regula, H Pashayan, Y Ouyang… - PRX Quantum, 2021 - APS
Consumption of magic states promotes the stabilizer model of computation to universal
quantum computation. Here, we propose three different classical algorithms for simulating …

Critical behaviors of non-stabilizerness in quantum spin chains

PS Tarabunga - Quantum, 2024 - quantum-journal.org
Non-stabilizerness–commonly known as magic–measures the extent to which a quantum
state deviates from stabilizer states and is a fundamental resource for achieving universal …

One Gate Makes Distribution Learning Hard

M Hinsche, M Ioannou, A Nietner, J Haferkamp… - Physical Review Letters, 2023 - APS
The task of learning a probability distribution from samples is ubiquitous across the natural
sciences. The output distributions of local quantum circuits are of central importance in both …

Classical simulation of non-Gaussian fermionic circuits

B Dias, R Koenig - Quantum, 2024 - quantum-journal.org
We propose efficient algorithms for classically simulating fermionic linear optics operations
applied to non-Gaussian initial states. By gadget constructions, this provides algorithms for …

Quantifying magic for multi-qubit operations

JR Seddon, ET Campbell - Proceedings of the Royal …, 2019 - royalsocietypublishing.org
The development of a framework for quantifying 'non-stabilizerness' of quantum operations
is motivated by the magic state model of fault-tolerant quantum computation and by the need …

Complexity phase transitions generated by entanglement

S Ghosh, A Deshpande, D Hangleiter, AV Gorshkov… - Physical Review Letters, 2023 - APS
Entanglement is one of the physical properties of quantum systems responsible for the
computational hardness of simulating quantum systems. But while the runtime of specific …

Quantifying multiqubit magic channels with completely stabilizer-preserving operations

G Saxena, G Gour - Physical Review A, 2022 - APS
In this paper we extend the resource theory of magic states to the channel domain by
considering completely stabilizer-preserving operations (CSPOs) as free. We introduce and …