Entangling one polariton with a photon: effect of interactions on a single-polariton quantum state
Abstract
Polaritons are quasi-particles originating from the coupling of light with matter that demonstrated quantum phenomena at the many-particle mesoscopic level, such as BEC and superfluidity. A highly sought and long-time missing feature of polaritons is a genuine quantum manifestation of their dynamics at the single-particle level. Although they are conceptually perceived as entangled states and theoretical proposals abound for an explicit manifestation of their single-particle properties, so far their behaviour has remained fully accountable for by classical and mean-field theories. In this Article, we report the first experimental demonstration of a genuinely-quantum manifestation of microcavity polaritons, by swapping, in a two-photon entangled state generated by parametric down-conversion, a photon for a polariton. Furthermore, we show how single polaritons are affected by polariton-polariton interactions in a propaedeutic demonstration of their qualities for quantum information applications.
Keywords
Cite
@article{arxiv.1609.01244,
title = {Entangling one polariton with a photon: effect of interactions on a single-polariton quantum state},
author = {Álvaro Cuevas and Blanca Silva and Juan Camilo López Carreño and Milena de Giorgi and Carlos Sánchez Muñoz and Antonio Fieramosca and Daniel Gustavo Suárez Forero and Filippo Cardano and Lorenzo Marrucci and Vittorianna Tasco and Giorgio Biasiol and Elena del Valle and Lorenzo Dominici and Dario Ballarini and Giuseppe Gigli and Paolo Mataloni and Fabrice P. Laussy and Fabio Sciarrino and Daniele Sanvitto},
journal= {arXiv preprint arXiv:1609.01244},
year = {2018}
}
Comments
19 pages, 6 figures