Research output: Contribution to journal › Article › peer-review
Self-Trapping of Exciton-Polariton Condensates in GaAs Microcavities. / Ballarini, Dario; Chestnov, Igor ; Caputo, Davide; De Giorgi, Milena; Dominici, Lorenzo; West, Kenneth; Pfeiffer, Loren N.; Gigli, Giuseppe; Kavokin, Alexey ; Sanvitto, Daniele.
In: Physical Review Letters, Vol. 123, No. 4, 047401, 23.07.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Self-Trapping of Exciton-Polariton Condensates in GaAs Microcavities
AU - Ballarini, Dario
AU - Chestnov, Igor
AU - Caputo, Davide
AU - De Giorgi, Milena
AU - Dominici, Lorenzo
AU - West, Kenneth
AU - Pfeiffer, Loren N.
AU - Gigli, Giuseppe
AU - Kavokin, Alexey
AU - Sanvitto, Daniele
N1 - Publisher Copyright: © 2019 American Physical Society.
PY - 2019/7/23
Y1 - 2019/7/23
N2 - The self-trapping of exciton-polariton condensates is demonstrated and explained by the formation of a new polaronlike state. Above the polariton lasing threshold, local variation of the lattice temperature provides the mechanism for an attractive interaction between polaritons. Because of this attraction, the condensate collapses into a small bright spot. Its position and momentum variances approach the Heisenberg quantum limit. The self-trapping does not require either a resonant driving force or a presence of defects. The trapped state is stabilized by the phonon-assisted stimulated scattering of excitons into the polariton condensate. While the formation mechanism of the observed self-trapped state is similar to the Landau-Pekar polaron model, this state is populated by several thousands of quasiparticles, in a striking contrast to the conventional single-particle polaron state.
AB - The self-trapping of exciton-polariton condensates is demonstrated and explained by the formation of a new polaronlike state. Above the polariton lasing threshold, local variation of the lattice temperature provides the mechanism for an attractive interaction between polaritons. Because of this attraction, the condensate collapses into a small bright spot. Its position and momentum variances approach the Heisenberg quantum limit. The self-trapping does not require either a resonant driving force or a presence of defects. The trapped state is stabilized by the phonon-assisted stimulated scattering of excitons into the polariton condensate. While the formation mechanism of the observed self-trapped state is similar to the Landau-Pekar polaron model, this state is populated by several thousands of quasiparticles, in a striking contrast to the conventional single-particle polaron state.
UR - http://www.scopus.com/inward/record.url?scp=85069960702&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/selftrapping-excitonpolariton-condensates-gaas-microcavities
U2 - 10.1103/PhysRevLett.123.047401
DO - 10.1103/PhysRevLett.123.047401
M3 - Article
VL - 123
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 4
M1 - 047401
ER -
ID: 49361179