59 citations · 187 across the 17 of their papers we have counts for
19 papers
Problem-aware sampling for bias and variance reduction in randomised Hamiltonian simulation
Brian Coyle, Jonathan H. Fetherolf, Antonio Márquez Romero +3
Randomised quantum simulation algorithms such as qDRIFT reduce circuit depth by replacing deterministic product formulas with stochastic compilations, but achieving high accuracy c…
OpenQARP: a modular framework for quantum application research
Stefano Scali, Vicente P. Soloviev, Antonio Márquez Romero +7
We introduce OpenQARP, the Open Quantum Application Research Package: an open-source Python framework for quantum application research, built on a compiled C++ core. In OpenQARP, a…
A unified quantum computing quantum Monte Carlo framework through structured state preparation
Giuseppe Buonaiuto, Antonio Marquez Romero, Brian Coyle +4
We extend Quantum Computing Quantum Monte Carlo (QCQMC) beyond ground-state energy estimation by systematically constructing the quantum circuits used for state preparation. Replac…
Quantum Randomized Subspace Iteration
Stefano Scali, Brian Coyle, Giuseppe Buonaiuto +1
Resolving degenerate quantum eigenspaces - including topologically ordered ground states and frustrated magnets - requires preparing high-fidelity states that span every direction…
Study of nuclear magnetic resonance spectra with the multi-modal multi-level quantum complex exponential least squares algorithm
Antonio Marquez Romero, Josh J. M. Kirsopp, Giuseppe Buonaiuto +1
We present a novel application of the multi-modal, multi-level quantum complex exponential least squares (MM-QCELS) algorithm, a state-of-the-art, early fault-tolerant quantum phas…
Quantum enhanced stratification of Breast Cancer: exploring quantum expressivity for real omics data
Valeria Repetto, Elia Giuseppe Ceroni, Giuseppe Buonaiuto +1
Quantum Machine Learning (QML) is considered one of the most promising applications of Quantum Computing in the Noisy Intermediate Scale Quantum (NISQ) era for the impact it is tho…
Machine learning with sub-diffraction resolution in the photon-counting regime
Giuseppe Buonaiuto, Cosmo Lupo
The resolution of optical imaging is classically limited by the width of the point-spread function, which in turn is determined by the Rayleigh length. Recently, spatial-mode demul…
Quantum Transfer Learning for Acceptability Judgements
Giuseppe Buonaiuto, Raffaele Guarasci, Aniello Minutolo +2
Hybrid quantum-classical classifiers promise to positively impact critical aspects of natural language processing tasks, particularly classification-related ones. Among the possibi…
Dynamical phases and quantum correlations in an emitter-waveguide system with feedback
Giuseppe Buonaiuto, Federico Carollo, Beatriz Olmos +1
We investigate the creation and control of emergent collective behavior and quantum correlations using feedback in an emitter-waveguide system using a minimal model. Employing homo…
Measurement-feedback control of chiral photon emission from an atom chain into a nanofiber
G. Buonaiuto, I. Lesanovsky, B. Olmos
We theoretically investigate measurement-based feedback control of a laser-driven one-dimensional atomic chain interfaced with a nanofiber. The interfacing leads to all-to-all inte…
Microscopic biasing of discrete-time quantum trajectories
Dario Cilluffo, Igor Lesanovsky, Giuseppe Buonaiuto +5
We develop a microscopic theory for biasing the quantum trajectories of an open quantum system, which renders rare trajectories typical. To this end we consider a discrete-time qua…
Interaction signatures and non-Gaussian photon states from a strongly driven atomic ensemble coupled to a nanophotonic waveguide
B. Olmos, G. Buonaiuto, P. Schneeweiss +1
We study theoretically a laser-driven one-dimensional chain of atoms interfaced with the guided optical modes of a nanophotonic waveguide. The period of the chain and the orientati…
Collectively enhanced chiral photon emission from an atomic array near a nanofiber
Ryan Jones, Giuseppe Buonaiuto, Ben Lang +2
Emitter ensembles interact collectively with the radiation field. In the case of a one-dimensional array of atoms near a nanofiber, this collective light-matter interaction does no…
Witnessing non-classicality through large deviations in quantum optics
Dario Cilluffo, Giuseppe Buonaiuto, Salvatore Lorenzo +4
Non-classical correlations in quantum optics as resources for quantum computation are important in the quest for highly-specialized quantum devices. The standard way to investigate…
Dynamical creation and detection of entangled many-body states in a chiral atom chain
Giuseppe Buonaiuto, Ryan Jones, Beatriz Olmos +1
Open quantum systems with chiral interactions can be realized by coupling atoms to guided radiation modes in waveguides or optical fibres. In their steady state these systems can f…
Quantum optics of nonlinear systems in cascade
Giuseppe Buonaiuto, Emiliano Cancellieri, David M. Whittaker
In this letter, we investigate the quantum optical properties of driven-dissipative nonlinear systems in a cascade configuration. We show that pumping a nonlinear system with a sta…
Conservation of Quantum Correlations in Multimode Systems with Symmetry
Giuseppe Buonaiuto, David M. Whittaker, Emiliano Cancellieri
We present a theoretical investigation of the properties of quantum correlation functions in a dissipative multimode system. We define a total mth order equal-time correlation func…
Polariton pattern formation and photon statistics of the associated emission
C. E. Whittaker, B. Dzurnak, O. A. Egorov +8
We report on the formation of a diverse family of transverse spatial polygon patterns in a microcavity polariton fluid under coherent driving by a blue-detuned pump. Patterns emerg…
Full Stark Control of Polariton States on a Spin-Orbit Hypersphere
Feng Li, Emiliano Cancellieri, Giuseppe Buonaiuto +3
The orbital angular momentum and the polarisation of light are physical quantities widely investigated for classical and quantum information processing. In this work we propose to…