Intra‐cavity laser manipulation of high‐dimensional non‐separable states

L Hai, Z Zhang, S Liu, L Li, Z Zhou… - Laser & Photonics …, 2024 - Wiley Online Library
Non‐separable states of structured light have the analogous mathematical forms with
quantum entanglement, which offer an effective way to simulate quantum process. However …

Spin to orbital angular momentum transfer in frequency up-conversion

B Pinheiro da Silva, WT Buono, LJ Pereira… - …, 2022 - degruyter.com
We demonstrate the spin to orbital angular momentum transfer in frequency upconversion
with structured light beams. A vector vortex is coupled to a circularly polarized Gaussian …

Spin-orbit states

WF Balthazar, DG Braga, VS Lamego, MHM Passos… - Physical Review A, 2021 - APS
We propose an all-optical setup to produce a wide class of X states with an intense laser
beam using spin-orbit modes. In order to characterize such simulated states, we …

Quantum optical description of phase conjugation of vector vortex beams in stimulated parametric down-conversion

AG De Oliveira, N Rubiano da Silva… - Physical Review …, 2020 - APS
We present a quantum-optics approach for describing stimulated parametric down-
conversion in the two-type-I crystal “sandwich” configuration, which allows for parametric …

Resonance of vector vortex beams in a triangular optical cavity

LM Rodrigues, L Marques Fagundes, DC Salles… - Scientific Reports, 2024 - nature.com
We experimentally demonstrate resonance of first-order vector vortex beams (VVB) with a
triangular optical cavity. We also show that, due to their symmetry properties, the VVBs …

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 …

Spin-orbit maximally discordant mixed states

DG Braga, I Fonseca, WF Balthazar, MS Sarandy… - Physical Review A, 2022 - APS
We introduce a proposal to prepare spin-obit maximally discordant mixed states by a linear
optical circuit, with quantum bits (qubits) encoded in the polarization and transverse mode …

Non-separability classification of degrees of freedom of light assisted by machine learning

TFC Carvalho, DG Braga, WF Balthazar… - Optics …, 2023 - Elsevier
In this work, we present a study about the non-separability of degrees of freedom (DoF) of
light in mixed modes, which emulates entangled mixed states. We explore bipartite spin …

Classical simulation of high-dimensional entanglement by non-separable angular–radial modes

S Liu, S Liu, C Yang, Z Xu, Y Li, Y Li, Z Zhou, G Guo… - Optics …, 2019 - opg.optica.org
An analogous model system for high-dimensional quantum entanglement is proposed,
based on the angular and radial degrees of freedom of the improved Laguerre Gaussian …

Quantum phase gates with geometric phases of spin-orbit modes

GTC Cruz, SA Carvalho, CER de Souza… - Quantum Information …, 2024 - Springer
In this work, we propose the use of geometric phases obtained for both polarization and
Hermite–Gaussian first-order transverse modes to create controlled phase gates. We …