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Formulation of the twisted-light–matter interaction at the phase singularity: The twisted-light gauge
(American Physical Society, 2015-03)
Twisted light is light carrying orbital angular momentum. The profile of such a beam is a ring-like structure with a node at the beam axis, where a phase singularity exists. Due to the strong spatial inhomogeneity the ...
Electric currents induced by twisted light in quantum rings
(Optical Society of America, 2009-10)
We theoretically investigate the generation of electric currents in quantum rings resulting from the optical excitation with twisted light. Our model describes the kinetics of electrons in a two-band model of a semiconductor-based ...
Magnetic-optical transitions induced by twisted light in quantum dots
(Institute of Physics Publishing, 2017-10)
It has been theoretically predicted that light carrying orbital angular momentum, or twisted light, can be tuned to have a strong magnetic-field component at optical frequencies. We here consider the interaction of these ...
Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
(American Physical Society, 2010-09)
We theoretically investigate the interband transitions and quantum kinetics induced by light carrying orbital angular momentum, or twisted light, in bulk semiconductors. We pose the problem in terms of the Heisenberg ...
Twisted-light-induced intersubband transitions in quantum wells at normal incidence
(IOP Publishing, 2013-08-29)
We examine theoretically the intersubband transitions induced by laser beams of light with orbital angular momentum (twisted light) in semiconductor quantum wells at normal incidence. These transitions become possible in ...
Electronic transitions in disk-shaped quantum dots induced by twisted light
(American Physical Society, 2009-04)
We theoretically investigate the absorption and emission of light carrying orbital angular momentum (twisted light) by quasi-two-dimensional (disk-shaped) quantum dots in the presence of a static magnetic field. We calculate ...
Photoexcitation of graphene with twisted light
(Springer, 2013-10-14)
We study theoretically the interaction of twisted light with graphene. The light-matter interaction matrix elements between the tight-binding states of electrons in graphene are determined near the Dirac points. We examine ...
Orbital and spin dynamics of intraband electrons in quantum rings driven by twisted light
(Optical Society of America, 2011-11)
We theoretically investigate the effect that twisted light has on the orbital and spin dynamics of electrons in quantum rings possessing sizable Rashba spin-orbit interaction. The system Hamiltonian for such a strongly ...
Insensitivity of spin dynamics to the orbital angular momentum transferred from twisted light to extended semiconductors
(American Physical Society, 2015-09)
We study the spin dynamics of carriers due to the Rashba interaction in semiconductor quantum disks and wells after excitation with light with orbital angular momentum. We find that although twisted light transfers orbital ...
Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields
(American Physical Society, 2017-01)
The formulation of the interaction of matter with singular light fields needs special care. In a recent article [G. F. Quinteiro, Phys. Rev. A 91, 033808 (2015)PLRAAN1050-294710.1103/PhysRevA.91.033808] we have shown that ...