项目名称: 特异材料结构附近的原子的色散力研究
项目编号: No.11274242
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 许静平
作者单位: 同济大学
项目金额: 78万元
中文摘要: 本课题计划通过研究特异材对中性原子的色散力的影响,来控制原子的力学行为。色散力是卡西米尔力和范德瓦尔斯力的统称,是来源于真空涨落的纯粹量子力学效应,其性质与材料的宏观电磁性质、形状以及原子的激发状态有关。而特异材料作为目前热门的人工微结构材料具有自然界不存在的奇异电磁性质,实验已经能在各个频段的实现。这样我们就可以通过研究与特异材料有关的色散力来设计制备基于特异材料的新型量子器件。该项目内容包括设计特异材料的形状和表面结构来控制基态原子的色散力,随后重点研究初始处于激发态原子的色散力。通过分析和优化使得特定的特异材料附近的原子所受的色散力量值很大且作用时间长,同时控制特异材料的表面结构能在远离界面几个波长的距离能形成势阱和势垒,最后研究运动原子的行为来利用色散力实现原子捕获和增强量子反射。本项目的内容即是量子光学、原子光学和新型材料的理论前沿,有和实验及应用紧密相关。
中文关键词: 卡西米尔潘德力;特异材料;量子干涉;;
英文摘要: We plan to study the dispersion force acted on atom near metamaterials, and aim to mechanically control the atom through metamaterials. Dispersion force is a general name of the Casimir force and Van der Waals force,which are pure quantum phenomena and originate from the vacuum fluctuation. Dispersion force becomes prominent as the size being in the order of micron. Such force can break the stability of device on the one hand, and can be used to design ando ptimize new types of atomic-optical device on the other hand. It is known that such force depends on the shape and the macroscope electromagnetic properties of the materials and the state of atom. Rencently, a kind of new man-made materials called metamaterials attracts intensive attention both on theory and experiment due to its unique electromagnetic property. Therefore, control the dispersion force by metamaterials is a promising project. This project contain following contents. The first, we consider the atom in ground state and place it near metamaterials.The key is to design the shape ,surface corrugation and index of metamaterials to get a three-dimension dispersion force. The second, we focus on the atom in excited state initially, and analyze the evolutioon of dispersion force acted on atom. The key is to design the metamaterials to g
英文关键词: Casimir-Polder force;Metamaterials;quantum interference;;