Sensitive absolute-gravity gradiometry using atom interferometry

被引：465

作者：

McGuirk, JM ^{[1
]}

Foster, GT ^{[1
]}

Fixler, JB ^{[1
]}

Snadden, MJ ^{[1
]}

Kasevich, MA ^{[1
]}

机构：

[1] Yale Univ, Dept Phys, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW A | 2002年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.65.033608

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the demonstration of a sensitive absolute-gravity gradiometer based on light-pulse atom-interference techniques. The gradiometer consists of two absolute accelerometers operated in a differential mode. We report a differential acceleration sensitivity of 4x10(-9) g/Hz(1/2) and an inferred differential acceleration accuracy of less than 10(-9) g. This corresponds to a gravity-gradient sensitivity of 4E/Hz(1/2) (1E =10(-9) s(-2)) and an accuracy of better than 1E for a 10-m separation between accelerometers. We demonstrate that the instrument can be used to detect nearby masses in a vibrationally noisy environment and characterize instrument sensitivity to spurious acceleration and rotation noise.

引用

页码：1 / 14

页数：14