Macroscopic coherence of a single exciton state in a polydiacetylene organic quantum wire

Details Macroscopic coherence of a single exciton state in a polydiacetylene organic quantum wire Macroscopic coherence of a single exciton state in a polydiacetylene organic quantum wire

2005-09-05

arxiv.org/abs/cond-mat/0509095v1

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages with 2 figures

Scientific paper

We show that a single exciton state in an individual ordered conjugated
polymer chain exhibits macroscopic quantum spatial coherence reaching tens of
microns, limited by the chain length. The spatial coherence of the k=0 exciton
state is demonstrated by selecting two spatially separated emitting regions of
the chain and observing their interference.

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