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First observation of the quantized exciton-polariton field and effect of interactions on a single polariton.

Cuevas, Álvaro
; 
López Carreño, Juan Camilo
; 
Silva, Blanca
; 
De Giorgi, Milena
; 
Suárez-Forero, Daniel G
; 
Sánchez Muñoz, Carlos
; 
Fieramosca, Antonio
; 
Cardano, Filippo
; 
Marrucci, Lorenzo
; 
Tasco, Vittorianna
... show 9 more
Authors
Cuevas, Álvaro
 López Carreño, Juan Camilo
 Silva, Blanca
 De Giorgi, Milena
 Suárez-Forero, Daniel G
 Sánchez Muñoz, Carlos
 Fieramosca, Antonio
 Cardano, Filippo
 Marrucci, Lorenzo
 Tasco, Vittorianna
 Biasiol, Giorgio
 del Valle, Elena
 Dominici, Lorenzo
 Ballarini, Dario
 Gigli, Giuseppe
 Mataloni, Paolo
 Laussy, Fabrice P
 Sciarrino, Fabio
 Sanvitto, Daniele
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Epub Date
Issue Date
2018-04-20
Submitted date
Subjects
Quantum physics
 polaritons
 entanglement
 quantum technology
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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.
Citation
Cuevas, Á, Carreño, JCL, Silva, B, De Giorgi, M, Suárez-Forero, DG, Muñoz, CS, Fieramosca, A, Cardano, F, Marrucci, L, Tasco, V, Biasiol, G, Del Valle, E, Dominici, L, Ballarini, D, Gigli, G, Mataloni, P, Laussy, FP, Sciarrino, F, Sanvitto, D. (2018) 'First observation of the quantized exciton-polariton field and effect of interactions on a single polariton', Science Advances, 4 (4) eaao6814 doi: 10.1126/sciadv.aao6814
Publisher
AAAS
Journal
Science Advances
Research Unit
URI
http://hdl.handle.net/2436/621715
DOI
10.1126/sciadv.aao6814
PubMed ID
29725616
PubMed Central ID
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https://advances.sciencemag.org/content/4/4/eaao6814
Type
Journal article
Language
en
Description
© 2018 The Authors. Published by Science. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.1126/sciadv.aao6814
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ISSN
2375-2548
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Faculty of Science and Engineering