Distribution of squeezed spin quantum noise in an antiferromagnet

被引：4
作者：
Peng, F [1 ]
Hao, B
机构：
[1] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
[2] China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2004年 / 348卷 / 1-4期
基金：
中国国家自然科学基金;
关键词：
magnon-squeezed states; spin fluctuation; Raman scattering; quantum noise;
D O I：
10.1016/j.physb.2003.12.014
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study the magnon-squeezed states generated by second-Raman scattering. The magnon-squeezed states allow a reduction in the spin-component fluctuation to below the level of the vacuum fluctuation. As the laser fields change the symmetry of the spin system, this leads to the anisotropy of the spin-fluctuation distribution. We evaluate the fluctuation of the spin component and discuss the anomalies of the spin-fluctuation distribution. (C) 2003 Elsevier B.V. All rights reserved.
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页码：306 / 309
页数：4
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