Results 11 to 20 of about 885,186 (351)
Excitonic properties of strained wurtzite and zinc-blende GaN/Al(x)Ga(1-x)N quantum dots [PDF]
J. Appl. Phys. 94, 7178 (2003), 2003 We investigate exciton states theoretically in strained GaN/AlN quantum dots with wurtzite (WZ) and zinc-blende (ZB) crystal structures, as well as strained WZ GaN/AlGaN quantum dots.
Alexander A. Balandin +8 more
core +2 more sources
Group-velocity slowdown in quantum-dots and quantum-dot molecules [PDF]
SPIE Proceedings, 2014 We investigate theoretically the slowdown of optical pulses due to quantum-coherence effects in InGaAs-based quantum dots and quantum dot molecules. Simple models for the electronic structure of quantum dots and, in particular, quantum-dot molecules are described and calibrated using numerical simulations.
Hans Christian Schneider +2 more
openaire +5 more sources
Optical Gain of Vertically Coupled Cd0.6Zn0.4Te/ZnTe Quantum Dots
Nanomaterials, 2023 The optical modal gain of Cd0.6Zn0.4Te/ZnTe double quantum dots was measured using a variable stripe length method, where large and small quantum dots are separated with a ZnTe layer.
Ming Mei +6 more
doaj +1 more source
Quantum computation with quantum dots [PDF]
Physical Review A, 1998 We propose a new implementation of a universal set of one- and two-qubit gates for quantum computation using the spin states of coupled single-electron quantum dots. Desired operations are effected by the gating of the tunneling barrier between neighboring dots.
Daniel Loss +3 more
openaire +4 more sources
Carbon Quantum Dots Derived from Different Carbon Sources for Antibacterial Applications
Antibiotics, 2021 Nanoparticles possess unique features due to their small size and can be composed of different surface chemistries. Carbon quantum dots possess several unique physico-chemical and antibacterial activities.
Yanyan Wu +4 more
doaj +1 more source
Piezomagnetic Quantum Dots [PDF]
Physical Review Letters, 2008 We study the influence of deformations on magnetic ordering in quantum dots doped with magnetic impurities. The reduction of symmetry and the associated deformation from circular to elliptical quantum confinement lead to the formation of piezomagnetic quantum dots.
Andre Petukhov +2 more
openaire +4 more sources
Eurasian Journal of Physics and Functional Materials, 2022 Various variations of the synthesis of ZnSe quantum dots are investigated. The influence of temperature, the concentration of precursors and the time of synthesis of quantum dots was taken into account.
B.A. Duisenbay +7 more
doaj +1 more source
Thermal tolerance of perovskite quantum dots dependent on A-site cation and surface ligand
Nature Communications, 2023 A detailed picture of temperature dependent behavior of CsxFA1-xPbI3 perovskite quantum dots across the composition range is constructed by performing in situ optical spectroscopic and structural measurements, supported by theoretical calculations that ...
Shuo Wang +8 more
doaj +1 more source
Spectroelectrochemistry of Quantum Dots [PDF]
Israel Journal of Chemistry, 2019 AbstractSpectroelectrochemistry (SEC) is a set of techniques with many advantages in the study and characterization of materials. Although SEC has not yet been widely used to study quantum dots (QDs), the information extracted from SEC experiments about these nanostructures is very useful.
Jesus Garoz‐Ruiz +3 more
openaire +4 more sources
Large voltage-tunable spin valve based on a double quantum dot [PDF]
Phys. Rev. Applied 16, 014029 (2021), 2021 We study the spin-dependent transport properties of a spin valve based on a double quantum dot. Each quantum dot is assumed to be strongly coupled to its own ferromagnetic lead, while the coupling between the dots is relatively weak. The current flowing through the system is determined within the perturbation theory in the hopping between the dots ...
arxiv +1 more source