Vacuum Field Photonic Trap for Excitons

The spectral and spatial dependence of the resonant Lamb shift of an exciton inside a photonic vacuum field landscape is considered to predict an optical dipole potential generated via virtual photons quantum fluctuations. This trapping potential can be exploited for exciton self-positioning in electric field hotspots at the nanoscale in view of quantum electrodynamics effects. By non Hermitian decomposition of the electromagnetic Green tensor in terms of quasi normal modes, the resonant part of the Lamb shift is expressed as Fano profile strictly interlinked to the Purcell enhancement of the exciton radiative lifetime. This approach explains how to tailor the depth of the vacuum photonic potential in several possible scenarios.

Automated summary

This study investigates the spectral and spatial dependence of the resonant Lamb shift of an exciton inside a photonic vacuum field landscape, which can predict an optical dipole potential generated via virtual photons quantum fluctuations. The trapping potential can be utilized for exciton self-positioning at the nanoscale in electric field hotspots, aiming to observe quantum electrodynamics effects. By decomposing the electromagnetic Green tensor in terms of quasi-normal modes, the resonant part of the Lamb shift is expressed as Fano profile interconnected with the Purcell enhancement of exciton radiative lifetime, providing insights on tailoring the depth of the vacuum photonic potential in various scenarios.