摘要：
A nonlinear hot image is usually thought as of a special case of self-focusing,and thus occurs when a laser beam propagates through a slab of self-focusing medium.Here we show theoretically that a hot image may also be formed by a thin slab of self-defocusing medium.The physical origin for this hot image formation is akin to the in-line volume-phase holographic imaging due to the intensity-dependent refractive-index modulation of the self-defocusing medium.Numerical simulations confirm the theoretical prediction and further identify the dependence of the hot image on the beam power,the modulation depth of obseuration and the thickness of self-defocusing medium.The analysis presented here brings new insight into the physics of hot image formation in the high power laser system.
期刊：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,2009年48(9):2685-2691 ISSN：0020-7748
通讯作者：
Zhang, Deng-Yu
作者机构：
[Zhang, Deng-Yu; You, Kai-Ming; Gao, Feng; Tang, Shi-Qing; Xie, Li-Jun; Zhan, Xiao-Gui] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.;[Tang, Shi-Qing; Xie, Li-Jun] Xiangtan Univ, Fac Mat & Photoelect Phys, Xiangtan 411005, Peoples R China.
通讯机构：
[Zhang, Deng-Yu] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
关键词：
Cavity QED;Quantum logic gates;Cluster states
摘要：
We propose a model to implement the two-qubit quantum logic gates, i.e., the quantum phase gate and the Controlled-NOT gate, and generate the atomic qubits cluster states with a large detuned interaction between four-level atoms and a single-mode cavity field. In the presented protocol, the quantum information is encoded on the stable ground states of the atoms, and the effect of decoherence from atomic spontaneous emission is negligible. In addition, the interaction between atoms and the cavity is large detuned, and the cavity is only virtually excited. Therefore, the scheme is insensitive to the cavity decay. The experimental feasibility of our proposal is also discussed.
作者机构：
[游开明] Depatrment of Physics and Electronics, Hengyang Normal University, Hengyang 421008, China;School of Nuclear Science and Technology, University of South China, Hengyang 421001, China;[袁红志] Hunan Tyen machine LPT. Co., Hengyang 421005, China;[谭延亮] Depatrment of Physics and Electronics, Hengyang Normal University, Hengyang 421008, China, School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
通讯机构：
[Tan, Y.-L.] D;Depatrment of Physics and Electronics, Hengyang Normal University, China
作者机构：
[龙祖强; 梁昔明] School of Information Science and Engineering, Central South University, Changsha 410083, China;[龙祖强; 陈列尊; 游开明] Department of Physics and Electronics Information Science, Heng Yang Normal University, Hengyang 421008, China
通讯机构：
School of Information Science and Engineering, Central South University, China
摘要：
介绍了EWB（Electronic Work Bench）软件的特点,给出了高阶有源滤波器设计的一般思路,用EWB软件设计出五阶巴特沃斯低通滤波器,其电路简单明了,参数容易确定,且电路调试方便。并且通过实际电路实验证明设计方法合理,设计出的滤波器满足技术指标。该有源滤波器设计方法对信号处理,通信及检测技术方面有实用价值。
期刊：
Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors,2007年28(5):741-744 ISSN：0253-4177
通讯作者：
Tan, Y.(hytyl@163.com)
作者机构：
[陈列尊; 游开明; 谭延亮] Department of Physics and Electronics, Hengyang Normal University, Hengyang 421008, China;[袁红志] Hunan Tyen Machine LPT. Co., Hengyang 421005, China
