We discuss a technique to strongly couple a single target quantum emitter to a cavity mode, which is enabled by virtual excitations of a nearby mesoscopic ensemble of emitters. A collective coupling of the latter to both the cavity and the target emitter induces strong photon non-linearities in addition to polariton formation, in contrast to common schemes for ensemble strong coupling. We demonstrate that strong coupling at the level of a single emitter can be engineered via coherent and dissipative dipolar interactions with the ensemble, and provide realistic parameters for a possible implementation with SiV− defects in diamond. Our scheme can find applications, amongst others, in quantum information processing or in the field of cavity-assisted quantum chemistry.
@article{arxiv.1904.08888,
title = {Ensemble-induced strong light-matter coupling of a single quantum emitter},
author = {Stefan Schütz and Johannes Schachenmayer and David Hagenmüller and Gavin K. Brennen and Thomas Volz and Vahid Sandoghdar and Thomas W. Ebbesen and Claudiu Genes and Guido Pupillo},
journal= {arXiv preprint arXiv:1904.08888},
year = {2020}
}
Comments
13 pages, 6 figures; substantially revised manuscript; see arXiv:1912.12703 for mathematical derivations