Site-controlled and advanced epitaxial Ge/Si quantum dots: Fabrication, properties, and applications

M Brehm, M Grydlik - Nanotechnology, 2017 - iopscience.iop.org
In this review, we report on fabrication paths, challenges, and emerging solutions to
integrate group-IV epitaxial quantum dots (QDs) as active light emitters into the existing …

Triggered indistinguishable single photons with narrow line widths from site-controlled quantum dots

KD Jons, P Atkinson, M Muller, M Heldmaier… - Nano Letters, 2013 - ACS Publications
In this Letter, we present narrow line width (7 μeV), nearly background-free single-photon
emission (g (2)(0)= 0.02) and highly indistinguishable photons (V= 0.73) from site-controlled …

Ultrahigh-resolution quantum dot patterning for advanced optoelectronic devices

TW Nam, MJ Choi, YS Jung - Chemical Communications, 2023 - pubs.rsc.org
Quantum dots have attracted significant scientific interest owing to their optoelectronic
properties, which are distinct from their bulk counterparts. In order to fully utilize quantum …

Enhanced telecom emission from single group-IV quantum dots by precise CMOS-compatible positioning in photonic crystal cavities

M Schatzl, F Hackl, M Glaser, P Rauter, M Brehm… - ACS …, 2017 - ACS Publications
Efficient coupling to integrated high-quality-factor cavities is crucial for the employment of
germanium quantum dot (QD) emitters in future monolithic silicon-based optoelectronic …

Recipes for the fabrication of strictly ordered Ge islands on pit-patterned Si (001) substrates

M Grydlik, G Langer, T Fromherz, F Schäffler… - …, 2013 - iopscience.iop.org
We identify the most important parameters for the growth of ordered SiGe islands on pit-
patterned Si (001) substrates. From a multi-dimensional parameter space we link individual …

Broadband enhancement of light-matter interaction in photonic crystal cavities integrating site-controlled quantum dots

M Felici, G Pettinari, F Biccari, A Boschetti, S Younis… - Physical Review B, 2020 - APS
The fabrication of integrated quantum dot (QD)-optical microcavity systems is a requisite
step for the realization of a wide range of nanophotonic experiments (and applications) that …

Leveraging crystal anisotropy for deterministic growth of InAs quantum dots with narrow optical linewidths

MK Yakes, L Yang, AS Bracker, TM Sweeney… - Nano …, 2013 - ACS Publications
Crystal growth anisotropy in molecular beam epitaxy usually prevents deterministic
nucleation of individual quantum dots when a thick GaAs buffer is grown over a …

Size-dependent properties of single InAs quantum dots grown in nanoimprint lithography patterned GaAs pits

J Tommila, A Schramm, TV Hakkarainen… - …, 2013 - iopscience.iop.org
We report on the structural and optical properties of single InAs quantum dots (QDs) formed
in etched GaAs pits with different dimensions. The site-controlled QDs were fabricated by …

Self-formation of hexagonal nanotemplates for growth of pyramidal quantum dots by metalorganic vapor phase epitaxy on patterned substrates

A Surrente, R Carron, P Gallo, A Rudra, B Dwir… - Nano Research, 2016 - Springer
We demonstrate the self-formation of hexagonal nanotemplates on GaAs (111) B substrates
patterned with arrays of inverted tetrahedral pyramids during metal-organic vapor phase …

In (Ga) As/GaAs site‐controlled quantum dots with tailored morphology and high optical quality

C Schneider, A Huggenberger, M Gschrey… - … status solidi (a), 2012 - Wiley Online Library
In this article, we describe epitaxial growth and investigations of optical properties of In (Ga)
As/GaAs site‐controlled quantum dots (QDs) fabricated on (001)‐oriented GaAs substrates …