Fine structure of highly charged quantum dot excitons: Turning dark into bright states

B. Urbaszek, R. J. Warburton, K. Karrai, B. D. Gerardot, P. M. Petroff, J. M. Garcia

Research output: Contribution to journalArticle

Abstract

The emission of a neutral exciton in a symmetric semiconductor quantum dot is split by the isotropic electron-hole exchange interaction into dark and bright states. We demonstrate that for a doubly charged exciton, there are also two states split by the electron-hole exchange, but both states are now bright. We also uncover a fine structure in the emission from the triply charged exciton, the singly and doubly charged biexcitons. By measuring these splittings we can access the isotropic exchange energies for holes in the ground and electrons ground and excited states. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original languageEnglish
Pages (from-to)421-425
Number of pages5
JournalPhysica Status Solidi C - Current Topics in Solid State Physics
Volume1
Issue number3
DOIs
Publication statusPublished - 2004

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fine structure
quantum dots
excitons
energy transfer
ground state
excitation
electrons
interactions

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Urbaszek, B. ; Warburton, R. J. ; Karrai, K. ; Gerardot, B. D. ; Petroff, P. M. ; Garcia, J. M. / Fine structure of highly charged quantum dot excitons : Turning dark into bright states. In: Physica Status Solidi C - Current Topics in Solid State Physics. 2004 ; Vol. 1, No. 3. pp. 421-425.
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Fine structure of highly charged quantum dot excitons : Turning dark into bright states. / Urbaszek, B.; Warburton, R. J.; Karrai, K.; Gerardot, B. D.; Petroff, P. M.; Garcia, J. M.

In: Physica Status Solidi C - Current Topics in Solid State Physics, Vol. 1, No. 3, 2004, p. 421-425.

Research output: Contribution to journalArticle

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