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Tunable exciton interactions in optical lattices with polar molecules

TitleTunable exciton interactions in optical lattices with polar molecules
Publication TypeJournal Article
Year of Publication2012
AuthorsXiang, P, Litinskaya, M, Krems, RV
JournalPHYSICAL REVIEW A
Volume85
Pagination061401
Date PublishedJUN 19
ISSN1050-2947
Abstract

Rotational excitation of polar molecules trapped in an optical lattice gives rise to rotational excitons. Here we show that nonlinear interactions of such excitons can be controlled by an electric field. The exciton-exciton interactions can be tuned to induce exciton pairing, leading to the formation of biexcitons. Tunable nonlinear interactions between excitons can be used for many applications ranging from the controlled preparation of entangled quasiparticles to the study of polaron interactions and the effects of nonlinear interactions on quantum energy transport in molecular aggregates.

DOI10.1103/PhysRevA.85.061401