ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT szfki.hu>]

SZFI SeminarGábor BenceHUN-REN Wigner RCP SZFIStrongly coupled vacuum-induced 
light scattering from a subradiant atomic arrayTuesday, 27 August 2024, 
10:00, KFKI Campus, Bldg. 1, 2nd floor, Conference RoomRayleigh scattering 
off a random medium is a fundamental phenomenon that we study with cold atoms 
under a controlled electromagnetic environment provided by a high-finesse 
optical resonator. In our experiment, effects of a strongly coupled vacuum 
field mode on the linear light scattering are revealed. Weakly laser-driven 
atoms are arranged in an incommensurate lattice with respect to the resonator 
mode function,  thus the intensity of light scattered into the resonator was 
found to be linearly proportional with the atom number, in accordance with 
the scaling in the case of a random medium. While the mean-field scattering 
vanishes due to the destructive interference in the given subradiant 
configuration of atoms,  the scattering manifests the strong collective 
coupling evidenced by well-resolved vacuum Rabi splitting peaks in the 
spectrum.  We also demonstrated that a strongly coupled vacuum mode can 
stimulate the rotation of light polarization beyond the linear polarizability 
description of isotropic objects. Minden érdeklődőt szívesen látunk! - 
Everyone is welcome to attend.Attila Nagysem-admin AT szfki.hu