【摘 要】
：
Near-infrared single photon sources in telecommunication bands,especially at 1550 nm,are required for long-distance quantum communication.Here a down-conversion
【机 构】
：
State Key Laboratory of Superlattices and Microstructures,Institute of Semiconductors,Chinese Academ
论文部分内容阅读
Near-infrared single photon sources in telecommunication bands,especially at 1550 nm,are required for long-distance quantum communication.Here a down-conversion quantum interface is implemented,where the single photons emitted from single InAs quantum dot at 864 nm is down converted to 1552 nm by using a fiber-coupled periodically poled lithium niobate(PPLN)waveguide and a 1.95 μmm pump laser,and the frequency conversion efficiency is～40％.The single-photon purity of quantum dot emission is preserved during the down-conversion process,i.e.,g(2)(0),only 0.22 at 1552 nm.This present technique advances the Ⅲ-Ⅴ semiconductor quantum dots as a promising platform for long-distance quantum communication.
其他文献
SnSe is considered to be a promising thermoelectric material due to a high ZT value and abundant and non-toxic composition elements.However,the thermal stabilit
We report a method of high-sensitively detecting the weak signal in photoassociation (PA) spectra of ultracold NaCs molecules by phase sensitive-demodulated tra
We propose a low-cost plasmonic metasurface integrated with single-layer graphene for dynamic modulation of midinfrared light.The plasmonic metasurface is compo
Density functional theory (DFT) with the B3LYP method and the SDD basis set is selected to investigate InnNi,InnNi-,and InnNi+ (n =1-14) clusters.For neutral an
植物工厂是现代农业的最高形式,植物工厂内叶类蔬菜的光、温、水、肥、气和系统管理主要是通过环境智能化控制系统和植物生理生长检测系统的运行,电脑对植物生长的光照（光谱、
针对当前早熟葡萄、无核葡萄和三倍体葡萄育种中，胚早期败育，很难得到种子的问题，论文采用正交试验设计，进行了胚抢救过程中相对最佳培养基、IBA浓度、6-BA浓度、GA浓度和最佳取
The impacts of HfOx inserting layer thickness on the electrical properties of the ZnO-based transparent resistance random access memory (TRRAM) device were inve
In this manuscript, the perovskite-based metal–oxide–semiconductor field effect transistors (MOSFETs) with phenyl-C61-butyric acid methylester (PCBM) layers a
本品种由农林水产省农业研究中心育成。1988年5月以食用的甘薯品种登记,编号为农林42号(原名:关东95号)。培育经过本品种以食味好,产量高,抗病虫害的食用品种为育种目标,197