Results 21 to 30 of about 894,614 (279)

Spin-constrained orbital-angular-momentum control in high-harmonic generation

open access: yesPhysical Review Research, 2019
The interplay between spin and orbital angular momentum in the up-conversion process allows us to control the macroscopic wave front of high harmonics by manipulating the microscopic polarizations of the driving field.
F. Kong   +10 more
doaj   +1 more source

QUARK ORBITAL ANGULAR MOMENTUM IN THE BARYON [PDF]

open access: yesInternational Journal of Modern Physics A, 2001
Analytical and numerical results, for the orbital and spin content carried by different quark flavors in the baryons, are given in the chiral quark model with symmetry breaking. The reduction of the quark spin, due to the spin dilution in the chiral splitting processes, is transferred into the orbital motion of quarks and antiquarks.
openaire   +2 more sources

Orbital Angular Momentum for Wireless Communications [PDF]

open access: yesIEEE Wireless Communications, 2019
As the traditional resources (frequency, time, space, etc.) are efficiently utilized, it becomes more and more challenging to satisfy the ever-lasting capacity-growing and users-boosting demand in wireless networks. Recently, the electromagnetic (EM) wave was found to possess not only linear momentum, but also angular momentum.
Wenchi Cheng   +4 more
openaire   +2 more sources

Dual-wavelength laser with topological charge

open access: yesAIP Advances, 2013
We demonstrate the simultaneous oscillation of different photons with equal orbital angular momentum in solid-state lasers for the first time to our knowledge.
Haohai Yu   +7 more
doaj   +1 more source

Photoionization with orbital angular momentum beams

open access: yesOptics Express, 2010
Intense laser ionization expands Einstein's photoelectric effect rules giving a wealth of phenomena widely studied over the last decades. In all cases, so far, photons were assumed to carry one unit of angular momentum. However it is now clear that photons can possess extra angular momentum, the orbital angular momentum (OAM), related to their spatial ...
Picón, A.   +5 more
openaire   +3 more sources

Orbital-angular-momentum entanglement in turbulence [PDF]

open access: yesPhysical Review A, 2013
The turbulence induced decay of orbital angular momentum (OAM) entanglement between two photons is investigated numerically and experimentally. To compare our results with previous work, we simulate the turbulent atmosphere with a single phase screen based on the Kolmogorov theory of turbulence.
Ibrahim, Alpha Hamadou   +4 more
openaire   +2 more sources

Spin-orbit interaction of light induced by transverse spin angular momentum engineering

open access: yesNature Communications, 2018
Harnessing both orbital and spin angular momentum in light fields enables various applications in bio-sensing and nano-photonics. Here, the authors create engineered spin-orbit coupling between orbital angular momentum and transverse spin angular ...
Zengkai Shao   +4 more
doaj   +1 more source

Classification of magnetic vortices by angular momentum conservation

open access: yesPhysical Review Research, 2021
Superfluid vortices are quantum excitations carrying a quantized amount of orbital angular momentum in a phase where global symmetry is spontaneously broken.
Kenji Fukushima   +2 more
doaj   +1 more source

Nested SU(2) symmetry of photonic orbital angular momentum

open access: yesFrontiers in Physics, 2023
The polarization state is described by a quantum mechanical two-level system, which is known as special unitary group of degree 2 [SU(2)]. Polarization is attributed to an internal spin degree of freedom inherent to photons, while photons also possess an
Shinichi Saito
doaj   +1 more source

Generation and manipulation of laser beams carrying orbital angular momentum for classical and quantum information applications [PDF]

open access: yes, 2009
Light orbital angular momentum (OAM) has been recognized as a new promising resource for classical and quantum information applications. In contrast to the spin angular momentum, the OAM is an inherently multidimensional.
Karimi, Ebrahim
core   +1 more source

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