134 citations · 292 across the 9 of their papers we have counts for
9 papers
Single photon emission from droplet epitaxial quantum dots in the standard telecom window around a wavelength of 1.55 m
N. Ha, T. Mano, S. Dubos +3
We study the luminescence dynamics of telecom wavelength InAs quantum dots grown on InP(111)A by droplet epitaxy. The use of the ternary alloy InAlGaAs as a barrier material leads…
Current-injection quantum-entangled-pair emitter using droplet epitaxial quantum dots on GaAs(111)A
Neul Ha, Takaaki Mano, Takashi Kuroda +2
A source of single photons and quantum entangled photon pairs is a key element in quantum information networks. Here, we demonstrate the electrically driven generation of quantum e…
Wavelength extension beyond 1.5 micrometer in symmetric InAs quantum dots on InP(111)A using droplet epitaxy
N. Ha, T. Mano, Y. -N. Wu +5
By using a C3v symmetric (111) surface as a growth substrate, we are able to achieve high structural symmetry in self-assembled quantum dots, which are suitable for use as quantum-…
Magneto-spectroscopy of excited states in charge-tunable GaAs/AlGaAs [111] quantum dots
M. V. Durnev, M. Vidal, L. Bouet +11
We present a combined experimental and theoretical study of highly charged and excited electron-hole complexes in strain-free (111) GaAs/AlGaAs quantum dots grown by droplet epitax…
Size dependent line broadening in the emission spectra of single GaAs quantum dots: Impact of surface charges on spectral diffusion
N. Ha, T. Mano, Y. L. Chou +8
Making use of droplet epitaxy, we systematically controlled the height of self-assembled GaAs quantum dots by more than one order of magnitude. The photoluminescence spectra of sin…
Charge tuning in [111] grown GaAs droplet quantum dots
L. Bouet, M. Vidal, T. Mano +10
We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled c…
Vanishing fine structure splittings in telecom wavelength quantum dots grown on (111)A surfaces by droplet epitaxy
X. Liu, N. Ha, H. Nakajima +7
The emission cascade of a single quantum dot is a promising source of entangled photons. A prerequisite for this source is the use of a symmetric dot analogous to an atom in a vacu…
Symmetric quantum dots as efficient sources of highly entangled photons
T. Kuroda, T. Mano, N. Ha +10
An ideal source of entangled photon pairs combines the perfect symmetry of an atom with the convenient electrical trigger of light sources based on semiconductor quantum dots. We c…
One-dimensional pattern of Au nanodots by ion-beam-sputtering: formation and mechanism
J-H Kim, N-B Ha, J-S Kim +3
Highly ordered one-dimensional arrays of nanodots, or nanobeads, are fabricated by forming nanoripples and nanodots in sequence, entirely by ion-beamsputtering (IBS) of Au(001). Th…