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Vacuum Field Photonic Trap for Excitons
Author(s) -
Gurioli Massimo
Publication year - 2021
Publication title -
advanced quantum technologies
Language(s) - English
Resource type - Journals
ISSN - 2511-9044
DOI - 10.1002/qute.202100046
Subject(s) - physics , lamb shift , photonics , exciton , photon , quantum optics , virtual particle , radiative transfer , field (mathematics) , electromagnetic field , spontaneous emission , electric field , classical electromagnetism , dipole , quantum electrodynamics , quantum mechanics , electron , laser , mathematics , pure mathematics
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.