Mitigating Mode-Matching Loss in Nonclassical Laser Interferometry

被引：16
|
作者：
Steinlechner, Sebastian [1 ,2 ]
Rohweder, Niels-Ole [1 ,2 ]
Korobko, Mikhail [1 ,2 ]
Toyra, Daniel [3 ,4 ]
Freise, Andreas [3 ,4 ]
Schnabel, Roman [1 ,2 ]
机构：
[1] Univ Hamburg, Inst Laserphys, Luruper Chaussee 149, D-22761 Hamburg, Germany
[2] Univ Hamburg, Zentrum Opt Quantentechnol, Luruper Chaussee 149, D-22761 Hamburg, Germany
[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
[4] Univ Birmingham, Inst Gravitat Wave Astron, Birmingham B15 2TT, W Midlands, England
来源：
PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 26期
基金：
欧洲研究理事会; 英国科学技术设施理事会;
关键词：
SQUEEZED VACUUM STATES; ALIGNMENT;
D O I：
10.1103/PhysRevLett.121.263602
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Strongly squeezed states of light are a key technology in boosting the sensitivity of interferometric setups, such as in gravitational-wave detectors. However, the practical use of squeezed states is limited by optical loss, which reduces the observable squeeze factor. Here, we experimentally demonstrate that introducing squeezed states in additional, higher-order spatial modes can significantly improve the observed nonclassical sensitivity improvement when the loss is due to mode-matching deficiencies. Our results could be directly applied to gravitational-wave detectors, where this type of loss is a major contribution.
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页数：5
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