arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2008.05609physics.atom-phquant-ph
收藏

物质波干涉测量中的物理意义相移

Physically significant phase shifts in matter-wave interferometry

Chris Overstreet, Peter Asenbaum, Mark A. Kasevich

摘要:

计算物质波干涉仪的相位存在许多不同的形式。然而,它可以是具有挑战性的发展物理直觉,一个特定的干涉仪实际上是测量或一个给定的经典测量是否提供等效的信息。本文通过一系列的思想实验来研究干涉仪相位的物理内容。在低阶势中,具有单一内部状态的物质波干涉仪提供与经典测试对象的位置测量的总和相同的信息。在高阶势中,干涉仪相位变得与干涉仪臂的运动解耦,并且相位包含不能通过干涉仪轨迹上的任何位置测量集获得的信息。高阶势中的这种相移从根本上将物质波干涉仪与经典测量设备区分开来。

英文摘要:

Many different formalisms exist for computing the phase of a matter-wave interferometer. However, it can be challenging to develop physical intuition about what a particular interferometer is actually measuring or about whether a given classical measurement provides equivalent information. Here we investigate the physical content of the interferometer phase through a series of thought experiments. In low-order potentials, a matter-wave interferometer with a single internal state provides the same information as a sum of position measurements of a classical test object. In high-order potentials, the interferometer phase becomes decoupled from the motion of the interferometer arms, and the phase contains information that cannot be obtained by any set of position measurements on the interferometer trajectory. This phase shift in a high-order potential fundamentally distinguishes matter-wave interferometers from classical measuring devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑