池州学院机电工程学院量子信息与光电信息交叉研究中心, 安徽 池州 247000
研究了压缩真空态和数态输入下腔光力系统的动力学演化特性, 分析了系统参数对系统线性熵和Wigner函数的调控作用。数值计算表明:调节压缩因子r可以改变机械 模Wigner函数分布特性,当r取较大值时,可使腔模与机械模间的纠缠显著增强;增大机械模参数k的取值, 将减小腔模Wigner函数负值深度和范围。
量子光学 腔光力系统 线性熵 Wigner函数 压缩效应 quantum optics cavity optomechanical system linear entropy Wigner function squeezing effect
空中交通管制系统能力评估存在底层指标类型多样、评估信息不确定的问题。为此，提出一种基于 D-S证据理论推理的评估方法。该方法构造信度规则库，将多种类型的不确定性数据换成统一的信度结构，通过证据推理方法获得空中交通管制系统的能力满足度分布。以某空中交通管制中心系统能力评估为例说明方法的可行性和有效性。
空中交通管制系统 能力评估 证据推理 信度规则库 信度结构 air traffic control capability evaluation evidential reasoning belief rule base belief structure 太赫兹科学与电子信息学报
2015, 13(2): 316
Author Affiliations
Abstract
1 Department of Physics, Fudan University, Shanghai 200433
2 State Key Lab for Advanced Photonic Materials and Devices, Fudan University, Shanghai 200433
3 Department of Macromolecular Science and Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433
Hydrophilic photo luminescent semiconductor quantum dots (QDs) are novel nanometer-size probes, which may have potential using in bio-imaging for biological objects. In this work, the photo-stability of these QDs in two kinds of living cells was studied, compared with conventional biological probes such as fluorescein isothiocyanate (FITC) and green fluorescence protein (GFP). It was found that the concentration of QDs in living cells is the dominant factor for its photo-stability in biological environment. When the concentration of the intracellular QDs was high, the QDs show good photo-stability that is much better than the organic fluorescent probes. However when its concentration was low, the QDs also can be photo-bleached quickly. Thus the reaching of the certain concentration level is the critical condition for QDs in the application of bio-imaging.
110.0110 Imaging systems 170.0170 Medical optics and biotechnology 180.0180 Microscopy Chinese Optics Letters
2005, 3(0s): 208
