A new quantum speed-meter interferometer: measuring speed to search for intermediate mass black holesa

被引：24

作者：

Danilishin, Stefan L. ^{[1
,2
,3
]}

Knyazev, Eugene ^{[4
]}

Voronchev, Nikita V. ^{[4
]}

Khalili, Farid Ya. ^{[4
]}

Graf, Christian ^{[3
]}

Steinlechner, Sebastian ^{[5
,6
]}

Hennig, Jan-Simon ^{[3
]}

Hild, Stefan ^{[3
]}

机构：

[1] Leibniz Univ Hannover, Inst Theoret Phys, Callinstr 38, D-30167 Hannover, Germany

[2] Albert Einstein Inst, Max Planck Inst Gravitat Phys, Callinstr 38, D-30167 Hannover, Germany

[3] Univ Glasgow, SUPA, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[4] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia

[5] Univ Hamburg, Inst Laserphys, Luruper Chaussee 149, D-22761 Hamburg, Germany

[6] Univ Hamburg, Zentrum Opt Quantentechnol, Luruper Chaussee 149, D-22761 Hamburg, Germany

来源：

LIGHT-SCIENCE & APPLICATIONS | 2018年 / 7卷

基金：

欧洲研究理事会; 俄罗斯基础研究基金会;

关键词：

Stars - Gravity waves - Laser interferometry - Black holes - Gravitational effects - Observatories;

D O I：

10.1038/s41377-018-0004-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The recent discovery of gravitational waves (GW) by Advanced LIGO (Laser Interferometric Gravitational-wave Observatory) has impressively launched the novel field of gravitational astronomy and allowed us to glimpse exciting objects about which we could previously only speculate. Further sensitivity improvements at the low-frequency end of the detection band of future GW observatories must rely on quantum non-demolition (QND) methods to suppress fundamental quantum fluctuations of the light fields used to readout the GW signal. Here we present a novel concept of how to turn a conventional Michelson interferometer into a QND speed-meter interferometer with coherently suppressed quantum back-action noise. We use two orthogonal polarizations of light and an optical circulator to couple them. We carry out a detailed analysis of how imperfections and optical loss influence the achievable sensitivity. We find that the proposed configuration significantly enhances the low-frequency sensitivity and increases the observable event rate of binary black-hole coalescences in the range of 10(2) - 10(3) M-circle dot by a factor of up to similar to 300.

引用

页数：9

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