IFIBA 22255
INSTITUTO DE FISICA DE BUENOS AIRES
Unidad Ejecutora - UE
artículos
Título:
Experimental verification of position-dependent angular-momentum selection rules for absorption of twisted light by a bound electron
Autor/es:
ANDREI AFANASEV; JONAS SCHULTZ; CARL E CARLSON; FERDINAND SCHMIDT-KALER; CHRISTIAN TOMÁS SCHMIEGELOW; MARIA SOLYANIK
Revista:
NEW JOURNAL OF PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2018 vol. 20 p. 23032 - 23032
ISSN:
1367-2630
Resumen:
We analyze the multipole excitation of atoms with twisted light, i.e, by a vortex light field that carries orbital angular momentum. A single trapped 40Ca+ ion serves as a localized and positioned probe of the exciting field. We drive the transition and observe the relative strengths of different transitions, depending on the ion´s transversal position with respect to the center of the vortex light field. On the other hand, transition amplitudes are calculated for a twisted light field in form of a Bessel beam, a Bessel-Gauss and a Laguerre-Gauss mode. Analyzing experimental obtained transition amplitudes we find agreement with the theoretical predictions at a level of better than 3%. Finally, we propose measurement schemes with two-ion crystals to enhance the sensing accuracy of vortex modes in future experiments.
