Entanglement-Enhanced Atomic Gravimeter

被引：3

作者：

Cassens, Christophe ^{[1
,2
]}

Meyer-Hoppe, Bernd ^{[1
,2
]}

Rasel, Ernst ^{[1
]}

Klempt, Carsten ^{[1
,2
]}

机构：

[1] Leibniz Univ Hannover, Inst Quantenopt, Welfengarten 1, D-30167 Hannover, Germany

[2] Deutsch Zentrum Luft & Raumfahrt eV DLR, Inst Satellitengeodasie & Inertialsensor, Callinstr 30b, D-30167 Hannover, Germany

来源：

PHYSICAL REVIEW X | 2025年 / 15卷 / 01期

关键词：

INTERFEROMETRY; CONSTANT;

D O I：

10.1103/PhysRevX.15.011029

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Interferometers based on ultracold atoms enable an absolute measurement of inertial forces with unprecedented precision. However, their resolution is fundamentally restricted by quantum fluctuations. Improved resolutions with entangled or squeezed atoms were demonstrated in internal-state measurements for thermal and quantum-degenerate atoms and, recently, for momentum-state interferometers with laser- cooled atoms. Here, we present a gravimeter based on Bose-Einstein condensates with a sensitivity of -1.7 & thorn;0.4 -0.5 dB beyond the standard quantum limit. Interferometry with Bose-Einstein condensates combined with delta-kick collimation minimizes atom loss in and improves scalability of the interferometer to very- long-baseline atom interferometers.

引用

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