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

F. Dubin·R. Melet·T. Barisien·R. Grousson·L. Legrand·M. Schott·V. Voliotis
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Abstract

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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F. Dubin, R. Melet, T. Barisien, R. Grousson, L. Legrand, M. Schott, V. Voliotis. 2005-09-05. Macroscopic coherence of a single exciton state in a polydiacetylene organic quantum wire. https://doi.org/10.1038/nphys196

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