53 research outputs found
Call for papers for a special volume of the Journal of Cleaner Production on urban ecological infrastructure for healthier cities: governance, management and engineering
Preliminary evaluation of antitumor effect and induction apoptosis in PC-3 cells of extract from Patrinia heterophylla
Urban forest in China: Development patterns, influencing factors and research prospects
Deladenus posteroporus n. sp. (Nematoda: Neotylenchidae) Isolated from Packaging Wood from Canada and White Pine (Pinus monticola) Lumber from the United States and Intercepted in Ningbo, China
A GIS-based moving window analysis of landscape pattern in the Beijing metropolitan area, China
Expert consensus on spontaneous ventilation video-assisted thoracoscopic surgery in primary spontaneous pneumothorax (Guangzhou)
Hybrid Emergy-LCA (HEML) based metabolic evaluation of urban residential areas: The case of Beijing, China
Quantum Light Source Based on Semiconductor Quantum Dots: A Review
Quantum light sources that generate single photons and entangled photons have important applications in the fields of secure quantum communication and linear optical quantum computing. Self-assembled semiconductor quantum dots, also known as “artificial atoms”, have discrete energy-level structures due to electronic confinement in all three spatial dimensions. It has the advantages of high stability, high brightness, deterministic, and tunable emission wavelength, and is easy to integrate into an optical microcavity with a high-quality factor, which can realize a high-performance quantum light source. In this paper, we first introduce the generation principles, properties, and applications of single-photon sources in the field of quantum information and then present implementations and development of quantum light sources in self-assembled semiconductor quantum dot materials. Finally, we conclude with an outlook on the future development of semiconductor quantum dot quantum light sources
Density functional theory plus dynamical mean field theory within the framework of linear combination of numerical atomic orbitals: Formulation and benchmarks
The combination of density functional theory with dynamical mean-field theory
(DFT+DMFT) has become a powerful first-principles approach to tackle strongly
correlated materials in condensed matter physics. The wide use of this approach
relies on robust and easy-to-use implementations, and its implementation in
various numerical frameworks will increase its applicability on the one hand
and help crosscheck the validity of the obtained results on the other. In the
work, we develop a formalism within the linear combination of numerical atomic
orbital (NAO) basis set framework, which allows for merging NAO-based DFT codes
with DMFT quantum impurity solvers. The formalism is implemented by interfacing
two NAO-based DFT codes with three DMFT impurity solvers, and its validity is
testified by benchmark calculations for a wide range of strongly correlated
materials, including 3\textit{d} transition metal compounds, lanthanides, and
actinides. Our work not only enables DFT+DMFT calculations using popular and
rapidly developing NAO-based DFT code packages, but also facilitates the
combination of more advanced beyond-DFT methodologies available in this codes
with the DMFT machinery.Comment: 18 pages, 11 figure
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