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Highly polarized electrically driven single-photon emission from a non-polar InGaN quantum dot

Accepted version
Peer-reviewed

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Authors

Kocher, CC 
Puchtler, TJ 
Jarman, JC 
Wang, T 

Abstract

jats:pNitride quantum dots are well suited for the deterministic generation of single photons at high temperatures. However, this material system faces the challenge of large in-built fields, decreasing the oscillator strength and possible emission rates considerably. One solution is to grow quantum dots on a non-polar plane; this gives the additional advantage of strongly polarized emission along one crystal direction. This is highly desirable for future device applications, as is electrical excitation. Here, we report on electroluminescence from non-polar InGaN quantum dots. The emission from one of these quantum dots is studied in detail and found to be highly polarized with a degree of polarization of 0.94. Single-photon emission is achieved under excitation with a constant current giving a g(2)(0) correlation value of 0.18. The quantum dot electroluminescence persists up to temperatures as high as 130 K.</jats:p>

Description

Keywords

5108 Quantum Physics, 40 Engineering, 51 Physical Sciences

Journal Title

Applied Physics Letters

Conference Name

Journal ISSN

0003-6951
1077-3118

Volume Title

111

Publisher

AIP Publishing
Sponsorship
Engineering and Physical Sciences Research Council (EP/M011682/1)
Engineering and Physical Sciences Research Council (EP/M010589/1)
Royal Academy of Engineering (RAEng) (LSRF1415\11\41)
EPSRC (1642226)
Engineering and Physical Sciences Research Council (EP/H047816/1)