Nonadiabatic diffraction of matter waves
Nonadiabatic diffraction of matter waves
复制标题
物质波的非绝热衍射
DOI：
10.1103/physreva.92.023628
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发表时间：
2015
影响因子：
2.9
通讯作者：
D. Schneble
中科院分区：
文献类型：
--
作者：
J. Reeves;L. Krinner;M. Stewart;Arturo Pazmino;D. Schneble
衍射现象通常可以用引起波动量重新分布的势来表示。使用与状态选择性光学晶格的轨道耦合的原子玻色-爱因斯坦凝聚体，我们研究了迄今为止尚未探索的非绝热衍射区域，其中无法定义衍射势，并且绝热修饰状态是强烈混合的。我们展示了在绝热极限下，观察到的内部和外部动力学之间的耦合如何让位于原子物质波的标准卡皮查-狄拉克衍射。我们展示了原子干涉测量方案的实用性，并讨论了耗散超流体现象的研究前景。
Diffraction phenomena usually can be formulated in terms of a potential that induces the redistribution of a wave's momentum. Using an atomic Bose-Einstein condensate coupled to the orbitals of a state-selective optical lattice, we investigate a hitherto unexplored nonadiabatic regime of diffraction in which no diffracting potential can be defined, and in which the adiabatic dressed states are strongly mixed. We show how, in the adiabatic limit, the observed coupling between internal and external dynamics gives way to standard Kapitza-Dirac diffraction of atomic matter waves. We demonstrate the utility of our scheme for atom interferometry and discuss prospects for studies of dissipative superfluid phenomena.