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

作　　者：Stefan L.Danilishin Eugene Knyazev Nikita V.Voronchev Farid Ya.Khalili Christian Gräf Sebastian Steinlechner Jan-Simon Hennig Stefan Hild 

机构地区：[1]Institut für Theoretische Physik,Leibniz Universität Hannover and Max-Planck-Institut für Gravitationsphysik(Albert-Einstein-Institut),Callinstraße 38,D-30167 Hannover,Germany [2]SUPA,School of Physics and Astronomy,University of Glasgow,Glasgow G128QQ,United Kingdom [3]M.V.Lomonosov Moscow State University,Faculty of Physics,Moscow 119991,Russia [4]Institut für Laserphysik und Zentrum für Optische Quantentechnologien der Universität Hamburg,Luruper Chaussee 149,22761 Hamburg,Germany

出　　处：《Light(Science & Applications)》2018年第1期940-948,共9页光（科学与应用)（英文版）

基　　金：supported by the European Research Council(ERC-2012-StG:307245);supported by the Lower Saxonian Ministry of Science and Culture within the frame of“Research Line”(Forschungslinie)QUANOMET–Quantum-and Nano-Metrology;supported by the Royal Society International Exchanges Scheme Grant IE160125;supported by the Russian Foundation for Basic Research Grants 14-02-00399 and 16-52-10069;supported by the LIGO NSF Grant PHY-1305863;supported by the European Commission Horizon 2020 Marie-Skłodowska-Curie IF Actions,grant agreement 658366.

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 102
103Mby a factor of up to~300.

关 键 词：QUANTUM allowed coherent 

分 类 号：O41[理学—理论物理]