标题： 类似Goos-Hänchen的偏移在原子光学中 显示英文标题

标题： Goos-Hänchen-Like Shifts in Atom Optics

摘要： 我们考虑两能级原子的物质波包通过由超高斯激光束产生的方形势场的传播。 我们在原子光学的框架内探索光子和原子角色互换的戈德哈伯-汉钦位移的物质波类似现象。 使用一种矢量理论，其中原子被当作具有两个内部自旋组分的粒子，我们表明不仅会出现大的负的戈德哈伯-汉钦位移，也会出现大的正的戈德哈伯-汉钦位移在反射的原子束中。 显示英文摘要

摘要： We consider the propagation of a matter wavepacket of two-level atoms through a square potential created by a super-Gaussian laser beam. We explore the matter wave analog of Goos-H\"{a}nchen shift within the framework of atom optics where the roles of atom and light is exchanged with respect to conventional optics. Using a vector theory, where atoms are treated as particles possessing two internal spin components, we show that not only large negative but also large positive Goos-H\"{a}nchen shifts can occur in the reflected atomic beam.