Year: 2022
Type: peer-review
Abstract: Cavity quantum electrodynamics provides an ideal platform to engineer and control lightmatter interactions with polariton quasiparticles.In this work, we investigate a many-body system of interacting particles in a harmonic trap coupled to a homogeneous quantum cavity field.The many-body system couples collectively to the cavity field, through its center of mass, and collective polariton states emerge.Due to the collective coupling, the cavity field mediates pairwise dipole-dipole interactions and enhances the effective mass of the particles.This leads to the localization of the center of mass which becomes maximal when light and matter are on resonance.The light-matter interaction modifies also the photonic properties of the system and the polariton ground state is populated with virtual, thermal (bunched) photons.In addition, the necessity of the diamagnetic A 2 term for the stability of the many-body system is discussed, as in its absence a superradiant ground state instability occurs.We demonstrate the emergence of coherent transfer of polaritonic population under an external magnetic field by monitoring the underlying Landau-Zener probability.
Authors: V. Rokaj, S. I. Mistakidis, H. R. Sadeghpour
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4384304741