Results 31 to 40 of about 548,689 (195)

Coherent full polarization control based on bound states in the continuum

open access: yesNature Communications, 2022
Polarization control is of paramount importance for various applications. Here, the authors enable extreme control over light polarization spanning the entire Poincaré sphere by combining coherent control of wave phenomena and the physics of bound states
Ming Kang   +7 more
doaj   +1 more source

Revisiting Poincaré Sphere and Pauli Algebra in Polarization Optics

open access: yesPhotonics
We present one of the main lines of development of Poincaré sphere representation in polarization optics, by using largely some of our contributions in the field.
Tiberiu Tudor, Gabriel Voitcu
doaj   +1 more source

Une histoire de la famille Poincaré (xviie-xxe siècles)

open access: yesPhilosophia Scientiæ, 2023
The Poincaré family has its roots in Lorraine, in the departments of Meurthe-et-Moselle, Meuse and Vosges. Arrancy-sur-Crusne, Bar-le-Duc, Landaville, Longuyon, Lunéville, Nancy, Neufchâteau, Remenoncourt, Xirocourt are among of the towns and villages ...
Laurent Rollet
doaj   +1 more source

Lorentz Transformation, Poincaré Vectors and Poincaré Sphere in Various Branches of Physics

open access: yes, 2018
In the frame of a generic language extended from the polarization theory—comprising the notions of Poincaré vectors, Poincaré sphere, and P-spheres—a geometric approach to Lorentz transformations alternative to the Minkowskian one is given.
Tiberiu Tudor
core   +1 more source

Active SU(2) operation on Poincaré sphere

open access: yesResults in Physics
Polarisation is described by an SU(2) state due to the coherence of photons emitted from a ubiquitous laser source. We propose a polarisation modulator, called as a Poincaré rotator, which enables dynamic control over a polarisation state by executing an
Shinichi Saito
doaj   +1 more source

Random Motions at Finite Velocity on Non-Euclidean Spaces

open access: yesMathematics, 2022
In this paper, random motions at finite velocity on the Poincaré half-plane and on the unit-radius sphere are studied. The moving particle at each Poisson event chooses a uniformly distributed direction independent of the previous evolution. This implies
Francesco Cybo Ottone, Enzo Orsingher
doaj   +1 more source

Influence of Primary Coma on the Tightly Focusing Characteristics of Circular Basis Hybrid Order Poincaré Sphere Beams

open access: yesPhotonics
Analogous to the Poincaré sphere, a hybrid order Poincaré sphere is used to represent the ellipse field singularities (C-points). We study the tight focusing properties of generic bright and dark hybrid order Poincaré sphere beams in the presence of ...
Sushanta Kumar Pal   +2 more
doaj   +1 more source

Ray-optical Poincaré sphere for structured Gaussian beams [PDF]

open access: yes, 2017
A general family of scalar structured Gaussian beams naturally emerges from a consideration of families of rays. These ray families, with the property that their transverse profile is invariant upon propagation (except for a global rescaling), have two ...
Miguel A. Alonso   +4 more
core   +1 more source

Noncommutative metasurfaces enabled diverse quantum path entanglement of structured photons

open access: yesOpto-Electronic Science
Quantum entanglement, a fundamental concept in quantum mechanics, lies at the heart of many current and future quantum technologies. A pivotal task is the generation and control of diverse quantum entangled states in a more compact and flexible manner ...
Yan Wang   +7 more
doaj   +1 more source

Probing non-classicality of primordial gravitational waves and magnetic field through quantum Poincare sphere

open access: yesPhysics Letters B, 2022
The universe is believed to be originated from a quantum state. However, defining measurable quantities for the quantum properties in the present universe has gained interest recently.
Debaprasad Maity, Sourav Pal
doaj   +1 more source

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