Quantum gyroscopes and Godel's universe:: entanglement opens a new testing ground for cosmology -: art. no. 37

被引：23

作者：

Delgado, A ^{[1
]}

Schleich, WP

Süssmann, G

机构：

[1] Univ Ulm, Abt Quantenphys, D-89069 Ulm, Germany

[2] Univ Munich, Sekt Phys, D-80333 Munich, Germany

来源：

NEW JOURNAL OF PHYSICS | 2002年 / 4卷

关键词：

D O I：

10.1088/1367-2630/4/1/337

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Some exact solutions of Einstein's field equations represent a rotating universe. One example is Godel's cosmological model. Bianchi solutions generalize the Godel metric and include the expansion of the universe. We propose a measurement of the cosmic rotation using a light or matter wave interferometer based on the Sagnac effect. Entanglement between the quanta employed in this quantum gyroscope enhances the accuracy, thereby coming closer to the more-than-challenging requirements of such experiments.

引用

页码：37.1 / 37.8

页数：8