Collective Spontaneous Emission from Pairs of Quantum Dots: Long-Range vs. Short-Range Couplings
W. Abdussalam and P. Machnikowski
Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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We study the spontaneous emission from a coherently delocalized exciton state in a double quantum dot as a function of the distance between the dots, focusing on the similarities and differences between the cases of radiative (long-range, dipole) and tunnel coupling between the excitons in the dots. We show that there may be no qualitative difference between the collective emission induced by these two coupling types in spite of their essentially different physical properties.
DOI: 10.12693/APhysPolA.120.865
PACS numbers: 78.67.Hc, 42.50.Ct, 03.65.Yz