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Polariton condensation in solitonic gap states in a one-dimensional periodic potential.

Abstract：

:Manipulation of nonlinear waves in artificial periodic structures leads to spectacular spatial features, such as generation of gap solitons or onset of the Mott insulator phase transition. Cavity exciton-polaritons are strongly interacting quasiparticles offering large possibilities for potential optical technologies. Here we report their condensation in a one-dimensional microcavity with a periodic modulation. The resulting mini-band structure dramatically influences the condensation process. Contrary to non-modulated cavities, where condensates expand, here, we observe spontaneous condensation in localized gap soliton states. Depending on excitation conditions, we access different dynamical regimes: we demonstrate the formation of gap solitons either moving along the ridge or bound to the potential created by the reservoir of uncondensed excitons. We also find Josephson oscillations of gap solitons triggered between the two sides of the reservoir. This system is foreseen as a building block for polaritonic circuits, where propagation and localization are optically controlled and reconfigurable.

journal_name

Nat Commun

journal_title

Nature communications

authors

Tanese D,Flayac H,Solnyshkov D,Amo A,Lemaître A,Galopin E,Braive R,Senellart P,Sagnes I,Malpuech G,Bloch J

doi

10.1038/ncomms2760

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

1749

issn

2041-1723

pii

ncomms2760

journal_volume

4

pub_type

杂志文章

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