为克服扫描计算成像系统测量和计算速度慢的缺点，综述一些快速计算成像技术，从测量和计算方面论述提高速度的方法。在基于光场调制的计算光学成像法中，介绍轴向扫描、横向扫描、多波长扫描、散射介质、多距离等调制方式。针对快速定量相位成像技术，介绍定量相位成像方法、基于Kramers-Kronig关系的快速定量相位成像方法、基于对角扩展采样的计算成像方法、基于对称照明的单帧计算成像方法。针对自动聚焦技术，介绍自动聚焦技术分类、核心算法、基于Tanimoto系数和多相梯度绝对值的自动聚焦方法、基于特征区域提取和细分搜索的快速自动聚焦方法。

利用金属表面等离激元（SPP）对光波的束缚和局域增强作用，设计了一种基于金属-电介质-金属波导布拉格光栅的全光开关。根据波导的电介质材料及其结构对有效折射率的调制作用，确定了开关各结构组成部分的材料和尺寸。通过引入金属波导滤波结构对抽运光和信号光进行了有效地分离，防止了抽运光对信号光及后续光路的干扰。使用时域有限差分算法（FDTD）对开关性能进行仿真，结果表明：新设计的全光开关在抽运光的光强为50 MW/cm2 时其消光比达到7.32 dB，开关响应时间小于2 ps，结构的横向尺寸约为400 nm。

提出了在一定的条件下，周期函数经过线性正则变换，结果仍然是周期函数，即利用线性正则变换可以产生泰伯效应，并从理论上给出了证明，得出了产生泰伯效应的条件。推导了特殊形式的线性正则变换（菲涅耳衍射、分数傅里叶变换和Gyrator变换）产生泰伯效应的条件，通过数值模拟验证了Gyrator变换的自成像条件，证明了该理论的正确性，从而将泰伯效应推广到了线性正则变换域。

利用并发度作为纠缠的度量研究了Werner态通过量子噪声信道(包括振幅和相位阻尼信道)之后的纠缠动力学性质,给出了Werner态通过量子噪声信道之后并发度的解析表达式,获得了纠缠突然死亡的参数条件。

将分数傅里叶变换引入到双重非线性相关方法中，通过对参考图像和目标图像分数傅里叶变换谱的双重非线性操作实现非线性分数相关。该方法利用非线性参数以及分数阶控制目标的形状和纹理的权重，从而实现目标相关识别的调控。该非线性分数相关系统由一个光电混合装置实现，数值仿真表明，这种光学图像识别系统的优点在于对目标的形状失真和纹理改变的分辨能力是可调节的，并且可改善相关峰的性能，具有很强的抗噪声能力。

By means of concurrence, we investigate the dynamics of entanglement between two initially separate atoms in succession passing through a cavity and their interaction with a Fock state field. We then analyze the effects of the atomic coherence, photon number, and atomic motion on the time evolution of atom-atom entanglement. The results show that there can be entanglement between two separate atoms, and that the threshold time for the creation of the entanglement is controllable by the photon number, atomic motion, and field-mode structure.

We investigate the dynamics of strongly localized solitons trapped in remote troughs of radially periodic lattices with Kerr-type self-focusing nonlinearity. The rotary motion of solitons is found to be more stable for larger nonlinear wavenumbers, lower rotating velocity, and shorter radius of the trapping troughs. When the lattice is shrunk or expanded upon propagation, the solitons can be trapped in the original trough and move outward or inward, with their rotating linear velocity inversely proportional to the radius of the trapping troughs.

We introduce a new spectrum transform into the image fusion field and propose a novel fusion method based on discrete fractional random transform (DFRNT). In DFRNT domain, high amplitude spectrum (HAS) and low amplitude spectrum (LAS) components carry different information of original images. For different fusion goals, different fusion rules can be adopted in HAS and LAS components, respectively. The proposed method is applied to fuse real multi-spectral (MS) and panchromatic (Pan) images. The fused image is observed to preserve both spectral information of MS and spatial information of Pan. Spectrum distribution of DFRNT is random and uniform, which guarantees that good information is reserved.

We present a novel method for realizing double-image encryption algorithm by combining the images in different transform domains. Two original images are encrypted into two interim images by fractional Fourier transform and gyrator transform, respectively. The two encrypted images can be obtained by means of the addition and subtraction of the two interim images. This is defined as a double-image sharing scheme, in which the original images are encrypted into two parts. The original images cannot be recovered only with any one of the two interim images. Numerical simulation experiments demonstrate the validity of the algorithm.

对一类光子消灭算符aN的正交归一本征态的迭加态的振幅k次方压缩特性进行研究，结果表明一类aN的正交归一本征态的迭加态的振幅k次方压缩特性明显地区别于aN的正交归一本征态k次方压缩。无论N取奇数还是偶数迭加态均存在振幅k(k=Nt或Nt/2)次方压缩，当位相差δ=2mπ/t(m为整数)时迭加态不存在振幅k次方压缩；当δ=π时，只有N和t同时为奇数才有可能存在k次方压缩；当δ=π/2时，对应t≠4m的不同取值迭加态存在k次方压缩；因而参量的位相对振幅的k次方压缩起着关键性的作用。