Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields
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 the Hamiltonian describing the interaction of a twisted-light beam having para...
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paper:paper_24699926_v95_n1_p_Quinteiro2023-06-08T16:36:03Z Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields Quinteiro, Guillermo Angular momentum Electric fields Magnetic fields Magnetic moments Magnetism Azimuthally polarized beams Electric and magnetic fields Light-matter interactions Magnetic effects Moment approximation Phase singularities Strong magnetic fields Twisted light beams Hamiltonians 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 the Hamiltonian describing the interaction of a twisted-light beam having parallel orbital and spin angular momenta with a small object located close to the phase singularity can be expressed only in terms of the electric field of the beam. Here we complement our study by providing an interaction Hamiltonian for beams having antiparallel orbital and spin angular momenta. Such beams may exhibit unusually strong magnetic effects. We further extend our formulation to radially and azimuthally polarized beams. The advantages of our formulation are that for all beams the Hamiltonian is written solely in terms of the electric and magnetic fields of the beam and as such it is manifestly gauge invariant. Furthermore, it is intuitive by resembling the well-known expressions in the dipole-electric and dipole-magnetic moment approximations. © 2017 American Physical Society. Fil:Quinteiro, G.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v95_n1_p_Quinteiro http://hdl.handle.net/20.500.12110/paper_24699926_v95_n1_p_Quinteiro |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Angular momentum Electric fields Magnetic fields Magnetic moments Magnetism Azimuthally polarized beams Electric and magnetic fields Light-matter interactions Magnetic effects Moment approximation Phase singularities Strong magnetic fields Twisted light beams Hamiltonians |
| spellingShingle |
Angular momentum Electric fields Magnetic fields Magnetic moments Magnetism Azimuthally polarized beams Electric and magnetic fields Light-matter interactions Magnetic effects Moment approximation Phase singularities Strong magnetic fields Twisted light beams Hamiltonians Quinteiro, Guillermo Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields |
| topic_facet |
Angular momentum Electric fields Magnetic fields Magnetic moments Magnetism Azimuthally polarized beams Electric and magnetic fields Light-matter interactions Magnetic effects Moment approximation Phase singularities Strong magnetic fields Twisted light beams Hamiltonians |
| description |
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 the Hamiltonian describing the interaction of a twisted-light beam having parallel orbital and spin angular momenta with a small object located close to the phase singularity can be expressed only in terms of the electric field of the beam. Here we complement our study by providing an interaction Hamiltonian for beams having antiparallel orbital and spin angular momenta. Such beams may exhibit unusually strong magnetic effects. We further extend our formulation to radially and azimuthally polarized beams. The advantages of our formulation are that for all beams the Hamiltonian is written solely in terms of the electric and magnetic fields of the beam and as such it is manifestly gauge invariant. Furthermore, it is intuitive by resembling the well-known expressions in the dipole-electric and dipole-magnetic moment approximations. © 2017 American Physical Society. |
| author |
Quinteiro, Guillermo |
| author_facet |
Quinteiro, Guillermo |
| author_sort |
Quinteiro, Guillermo |
| title |
Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields |
| title_short |
Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields |
| title_full |
Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields |
| title_fullStr |
Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields |
| title_full_unstemmed |
Formulation of the twisted-light-matter interaction at the phase singularity: Beams with strong magnetic fields |
| title_sort |
formulation of the twisted-light-matter interaction at the phase singularity: beams with strong magnetic fields |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v95_n1_p_Quinteiro http://hdl.handle.net/20.500.12110/paper_24699926_v95_n1_p_Quinteiro |
| work_keys_str_mv |
AT quinteiroguillermo formulationofthetwistedlightmatterinteractionatthephasesingularitybeamswithstrongmagneticfields |
| _version_ |
1768542762432462848 |