Heralded Generation of an Atomic NOON State

被引：57

作者：

Chen, Yu-Ao ^{[1
,2
,3
]}

Bao, Xiao-Hui ^{[1
,2
,3
]}

Yuan, Zhen-Sheng ^{[1
,2
,3
]}

Chen, Shuai ^{[1
,2
,3
]}

Zhao, Bo ^{[1
]}

Pan, Jian-Wei ^{[1
,2
,3
]}

机构：

[1] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 04期

关键词：

STANDARD QUANTUM LIMIT; OPTICS; MEMORY;

D O I：

10.1103/PhysRevLett.104.043601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the heralded generation of an atomic NOON state by observation of phase super resolution in a motion-sensitive spin-wave (SW) interferometer. The SW interferometer is implemented by generating a superposition of two SWs and observing the interference between them, where the interference fringe is sensitive to the atomic collective motion. By heralded generation of a second order NOON state in the SW interferometer, we observe the interference pattern which provides strong evidence of phase super resolution. The demonstrated SW interferometer can in principle be scaled up to a highly entangled state, and thus is of fundamental importance, and might be used as an inertial sensor.

引用

页数：4

共 20 条

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