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MagnetismThe quantum states of a spin 12 (a qubit) are parametrized by the space CP1∼S2, the Bloch sphere. A spin j for a generic j (a 2j+1-state system) is represented instead by a point in a larger space, CP2j.
Kenichi Konishi, Roberto Menta
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Dual electromagnetism: helicity, spin, momentum and angular momentum [PDF]
New Journal of Physics, 2013 The dual symmetry between electric and magnetic fields is an important intrinsic property of Maxwell equations in free space. This symmetry underlies the conservation of optical helicity and, as we show here, is closely related to the separation of spin ...
Konstantin Y Bliokh +2 more
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Spin angular momentum modulation via spin–orbit interaction in fractional orbital angular momentum beams [PDF]
NanophotonicsLight exhibits both spin and orbital angular momentum (SAM and OAM). These two forms of angular momentum remain independent in paraxial fields, but become coupled in confined fields through spin–orbit interactions (SOI).
Chen Xusheng +4 more
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Elastic Orbital Angular Momentum [PDF]
Physical Review Letters, 2022 5 pages, 3 figures plus supplemental ...
Chaplain, G. J. +2 more
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The angular momentum of vectorial non-paraxial fields and the role of radial charges in orbit-spin coupling [PDF]
EPJ Web of Conferences, 2020 Electromagnetic fields carry a linear and an angular momentum, the first being responsible for the existence of the radiation pressure and the second for the transfer of torque from electromagnetic radiation to matter.
El Gawhary Omar, Urbach Paul
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Orbital Angular Momentum Microlaser [PDF]
Conference on Lasers and Electro-Optics, 2016 Microlasers with a twist Structured light, in the form of helical wavefronts, provides an additional degree of freedom to encode information for optical communications. Creating light beams with the desired amount of optical angular momentum, or twist, has usually been achieved with bulk optic devices. Miao et al.
Pei, Miao +6 more
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Evolution of the Angular Momentum of Molecular Cloud Cores Formed from Filament Fragmentation
The Astrophysical Journal, 2023 The angular momentum of molecular cloud cores plays an important role in the process of star formation. However, the time evolution of the angular momentum of molecular cloud cores is still unclear. In this paper, we perform three-dimensional simulations
Yoshiaki Misugi +2 more
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Hall Effect at the Focus of an Optical Vortex with Linear Polarization
Micromachines, 2023 The tight focusing of an optical vortex with an integer topological charge (TC) and linear polarization was considered. We showed that the longitudinal components of the spin angular momentum (SAM) (it was equal to zero) and orbital angular momentum (OAM)
Victor V. Kotlyar +3 more
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Spin–Orbital Transformation in a Tight Focus of an Optical Vortex with Circular Polarization
Applied Sciences, 2023 In the framework of the Richards–Wolf formalism, the spin–orbit conversion upon tight focusing of an optical vortex with circular polarization is studied.
Victor V. Kotlyar +4 more
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A new look at the Dirac quantization condition
European Physical Journal C: Particles and Fields, 2023 The angular momentum of any quantum system should be unambiguously quantized. We show that such a quantization fails for a pure Dirac monopole due to a previously overlooked field angular momentum from the monopole-electric charge system coming from the ...
Michael Dunia +2 more
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