Moroni, ST;Varo, S;Juska, G;Chung, TH;Gocalinska, A;Pelucchi, E

2019

January

Journal of Crystal Growth

Vanishing biexciton binding energy from stacked, MOVPE grown, site-controlled pyramidal quantum dots for twin photon generation

Validated

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VAPOR-PHASE EPITAXY NANOSTRUCTURES ARRAYS DEVICE

506

36

39

We characterized stacked double-pyramidal quantum dots which showed biexciton binding energies close to zero by means of photoluminescence and cross-correlation measurements. It was possible to obtain a sequence of two photons with (nearly) the same energy from the biexciton-exciton-ground state cascade, as corroborated by a basic rate-equation model. This type of two-photon emission is both of relevance for fundamental quantum information theory studies as well as for more exotic applicative fields such as quantum biology.

AMSTERDAM

0022-0248

10.1016/j.jcrysgro.2018.10.005