Observation of macroscopic coherence in self-organized dipolar excitons

We report experiments showing that spatially indirect excitons confined in a wide single quantum well can exhibit macroscopic spatial coherence. Extended coherence is spontaneously established in the regime where indirect excitons form a distinctive ring shaped pattern fragmented into microscopic be...

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Veröffentlicht in:arXiv.org 2012-10
Hauptverfasser: Alloing, M, Fuster, D, Gonzalez, Y, Gonzalez, L, Dubin, F
Format: Artikel
Sprache:eng
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Zusammenfassung:We report experiments showing that spatially indirect excitons confined in a wide single quantum well can exhibit macroscopic spatial coherence. Extended coherence is spontaneously established in the regime where indirect excitons form a distinctive ring shaped pattern fragmented into microscopic beads. These contain a large concentration of indirect excitons at sub-Kelvin temperatures, the excitons spatial coherence being the greatest in the vicinity of the fragments.
ISSN:2331-8422