Optical quantum metrology

M Barbieri - PRX Quantum, 2022 - APS
The purpose of quantum technologies is to explore how quantum effects can improve on
existing solutions for the treatment of information. Quantum photonics sensing holds great …

Entanglement-preserving measurement of the Bell parameter on a single entangled pair

S Virzì, E Rebufello, F Atzori, A Avella… - Quantum Science …, 2024 - iopscience.iop.org
Bell inequalities represent one of the cornerstones of quantum foundations, and a
fundamental tool for quantum technologies. Although a lot of effort was put in exploring and …

XpookyNet: advancement in quantum system analysis through convolutional neural networks for detection of entanglement

A Kookani, Y Mafi, P Kazemikhah, H Aghababa… - Quantum Machine …, 2024 - Springer
Quantum system attributes, notably entanglement, are indispensable in manipulating
quantum information tasks. Ergo, machine learning applications to help harness the …

Quantum correlation dynamics in controlled two-coupled-qubit systems

I Ghiu, R Grimaudo, T Mihaescu, A Isar, A Messina - Entropy, 2020 - mdpi.com
We study and compare the time evolutions of concurrence and quantum discord in a driven
system of two interacting qubits prepared in a generic Werner state. The corresponding …

Spatial and temporal characterization of polarization entanglement

A Nomerotski, D Katramatos, P Stankus… - … Journal of Quantum …, 2020 - World Scientific
We describe the full temporal and spatial characterization of polarization-entangled photons
produced by Spontaneous Parametric Down Conversions using an intensified high-speed …

Quantum correlations of two qubits beyond entanglement in two lossy cavities linked by a waveguide

ABA Mohamed, HA Hessian, H Eleuch - Chaos, Solitons & Fractals, 2020 - Elsevier
We explore the quantum correlations (QCs) of two non-interacting two-level systems
(qubits). Each qubit is embedded in an open cavity, the cavities are linked by an optical fiber …

Nonclassical effects in a nonlinear two trapped-particles system under intrinsic decoherence

ABA Mohamed, HA Hessian, ASF Obada - Chaos, Solitons & Fractals, 2021 - Elsevier
In this paper, we analytically explore the dynamics of a nonlinear two-qubit system derived
from a physical model that describes laser-irradiated two trapped particles in the Lamb …

Experimental investigation of quantum discord in spin-orbit states

VS Lamego, DG Braga, WF Balthazar, JAO Huguenin - Physical Review A, 2024 - APS
We perform an experimental study of quantum discord on spin-orbit modes of an intense
laser beam, analogous to different X states. These modes are prepared through the …

Fisher and Skew Information Correlations of Two Coupled Trapped Ions: Intrinsic Decoherence and Lamb-Dicke Nonlinearity

ABA Mohamed, A Farouk, MF Yassen, H Eleuch - Symmetry, 2021 - mdpi.com
It is well known that many quantum information processing methods in artificial atoms
depend largely on their engineering properties and their ability to generate quantum …

Exploring quasi-probability Husimi-distributions in nonlinear two trapped-ion qubits: intrinsic decoherence effects

LA Al-Essa, AY AL-Rezami, FM Aldosari… - Optical and Quantum …, 2024 - Springer
The Husimi phase-space distribution is an efficient tool for studying quantum coherent states
as it provides information on quantum-state features. The paper investigates the non …