Details

Autor(en) / Beteiligte

• Kruchinin, Stanislav Yu
• Rukhlenko, Ivan D.
• Baimuratov, Anvar S.
• Leonov, Mikhail Yu
• Turkov, Vadim K.
• Gun'ko, Yurii K.
• Baranov, Alexander V.
• Fedorov, Anatoly V.

Titel

Photoluminescence of a quantum-dot molecule

Ist Teil von

• Journal of applied physics, 2015-01, Vol.117 (1)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2015

Quelle

AIP Journals

Beschreibungen/Notizen

• The coherent coupling of quantum dots is a sensitive indicator of the energy and phase relaxation processes taking place in the nanostructure components. We formulate a theory of low-temperature, stationary photoluminescence from a quantum-dot molecule composed of two spherical quantum dots whose electronic subsystems are resonantly coupled via the Coulomb interaction. We show that the coupling leads to the hybridization of the first excited states of the quantum dots, manifesting itself as a pair of photoluminescence peaks with intensities and spectral positions strongly dependent on the geometric, material, and relaxation parameters of the quantum-dot molecule. These parameters are explicitly contained in the analytical expression for the photoluminescence differential cross section derived in the paper. The developed theory and expression obtained are essential in interpreting and analyzing spectroscopic data on the secondary emission of coherently coupled quantum systems.