This article is cited in 3 papers

XXIII International symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 11–14, 2019

Non-classical light sources based on selectively positioned deterministic microlenses structures and (111) In(Ga)As quantum dots

I. A. Derebezov^ab, V. A. Gaisler^ac, A. V. Gaisler^a, D. V. Dmitriev^a, A. I. Toropov^a, M. von Helversen^d, C. de la Haye^d, S. Bounouar^d, S. Reitzenstein<sup>d

a</sup> Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^b Siberian State University of Telecommunications and Informatics, Novosibirsk
^c Lobachevsky State University of Nizhny Novgorod
^d Institut für Festkörperphysik, Technische Universität Berlin, Berlin, Federal Republic of Germany

Abstract: Hybrid microcavity for single quantum dot based emitters has been developed and realized. The microcavity consists of semiconductor distributed Bragg reflector and microlens, which is selectively positioned over a single (111) In(Ga)As quantum dot. We have demonstrated pure single photon emission with $g^{(2)}(\tau)$; $g^{(2)}(0)$ = 0.07. The fine structure of exciton states of (111) In(Ga)As quantum dots is studied. It is shown that the splitting of exciton states is comparable with the natural width of exciton lines, which is of great interest for the design of emitters of pairs of entangled photons on the basis of these quantum dots.

Keywords: quantum dots, single-photon sources, photon-pair sources, fine structure of exciton states.

Received: 24.04.2019
Revised: 29.04.2019
Accepted: 29.04.2019

DOI: 10.21883/FTP.2019.10.48286.32

 English version: Semiconductors, 2019, 53:10, 1304–1307

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