Frenkel biexcitons in optical lattices with polar molecules

Details Frenkel biexcitons in optical lattices with polar molecules Frenkel biexcitons in optical lattices with polar molecules

2011-12-16

arxiv.org/abs/1112.3942v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Frenkel biexciton -- a bound state of two Frenkel excitons -- is a strongly correlated state of two collective excitations in a molecular crystal. Such states are exceedingly hard to create and observe in solid-state crystals. Here we show that Frenkel biexcitons can be created in an ensemble of polar molecules trapped on an optical lattice by applying an electric field. We demonstrate that the binding energy of the biexcitons can be externally controlled. This can be used for many applications ranging from the controlled preparation of entanglement between quasi-particles to the study of bipolarons and the effects of non-linear exciton interactions on energy transport in molecular aggregates.

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