First observation of the quantized exciton-polariton field and effect of interactions on a single polariton. Cuevas, Á., Carreño, J., Silva, B., De Giorgi, M., Suárez-Forero, D., Muñoz, C., Fieramosca, A., Cardano, F., Marrucci, L., Tasco, V., Biasiol, G., Del Valle, E., Dominici, L., Ballarini, D., Gigli, G., Mataloni, P., Laussy, F., Sciarrino, F., & Sanvitto, D. Science Advances, American Association for the Advancement of Science, 2018. cited By 25
First observation of the quantized exciton-polariton field and effect of interactions on a single polariton [link]Paper  doi  abstract   bibtex   
Polaritons are quasi-particles that originate from the coupling of light with matter and that demonstrate quantum phenomena at the many-particle mesoscopic level, such as Bose-Einstein condensation 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 behavior has remained fully accounted for by classical and mean-field theories. We report the first experimental demonstration of a genuinely quantum state of the microcavity polariton field, by swapping a photon for a polariton in a two-photon entangled state generated by parametric downconversion. When bringing this single-polariton quantum state in contact with a polariton condensate, we observe a disentangling with the external photon. This manifestation of a polariton quantum state involving a single quantum unlocks new possibilities for quantum information processing with interacting bosons. Copyright © 2018 The Authors.
@ARTICLE{Cuevas2018,
author={Cuevas, Á. and Carreño, J.C.L. and Silva, B. and De Giorgi, M. and Suárez-Forero, D.G. and Muñoz, C.S. and Fieramosca, A. and Cardano, F. and Marrucci, L. and Tasco, V. and Biasiol, G. and Del Valle, E. and Dominici, L. and Ballarini, D. and Gigli, G. and Mataloni, P. and Laussy, F.P. and Sciarrino, F. and Sanvitto, D.},
title={First observation of the quantized exciton-polariton field and effect of interactions on a single polariton},
journal={Science Advances},
year={2018},
volume={4},
number={4},
doi={10.1126/sciadv.aao6814},
art_number={eaao6814},
note={cited By 25},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045964035&doi=10.1126%2fsciadv.aao6814&partnerID=40&md5=eaa9da0bea3a4ce9ea83e666969b6d73},
abstract={Polaritons are quasi-particles that originate from the coupling of light with matter and that demonstrate quantum phenomena at the many-particle mesoscopic level, such as Bose-Einstein condensation 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 behavior has remained fully accounted for by classical and mean-field theories. We report the first experimental demonstration of a genuinely quantum state of the microcavity polariton field, by swapping a photon for a polariton in a two-photon entangled state generated by parametric downconversion. When bringing this single-polariton quantum state in contact with a polariton condensate, we observe a disentangling with the external photon. This manifestation of a polariton quantum state involving a single quantum unlocks new possibilities for quantum information processing with interacting bosons. Copyright © 2018 The Authors.},
publisher={American Association for the Advancement of Science},
issn={23752548},
pubmed_id={29725616},
document_type={Article},
source={Scopus},
}

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