Year: 2025
Type: article
Abstract: By considering linear scattering of laser-driven cold atoms inside an undriven high-finesse optical resonator, we experimentally demonstrate effects unique to a strongly coupled vacuum field. Arranging the atoms in an incommensurate lattice with respect to the radiation wavelength, the Bragg scattering into the cavity can be suppressed by destructive interference: the atomic array is subradiant to the cavity mode under transverse illumination. We show however, that strong collective coupling leads to a drastic modification of the excitation spectrum, as evidenced by well-resolved vacuum Rabi splitting in the intensity of the fluctuations. Furthermore, we demonstrate a significant polarization rotation in the linear scattering off the subradiant array via Raman scattering induced by the strongly coupled vacuum field.
Source: EPJ Quantum Technology
Authors: Bence Gábor, Adwaith K. Varooli, Dániel Varga, Bálint Sárközi, Árpád Kurkó, András Dombi, Thomas W. Clark, Francis I. B. Williams, David Nagy, András Vukics, Peter Domokos
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,190
Award: G2044776484
OpenAlex ID: W4403851112