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DOI | 10.1038/nature21728 |
Measurement of quantum back action in the audio band at room temperature | |
Cripe, Jonathan1; Aggarwal, Nancy2; Lanza, Robert2; Libson, Adam2; Singh, Robinjeet1; Heu, Paula3,4; Follman, David3,4; Cole, Garrett D.3,4,5; Mavalvala, Nergis2; Corbitt, Thomas1 | |
2019-04-18 | |
发表期刊 | NATURE
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ISSN | 0028-0836 |
EISSN | 1476-4687 |
出版年 | 2019 |
卷号 | 568期号:7752页码:364-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Austria |
英文摘要 | Quantum mechanics places a fundamental limit on the precision of continuous measurements. The Heisenberg uncertainty principle dictates that as the precision of a measurement of an observable (for example, position) increases, back action creates increased uncertainty in the conjugate variable (for example, momentum). In interferometric gravitational-wave detectors, higher laser powers reduce the position uncertainty created by shot noise (the photon-counting error caused by the quantum nature of the laser) but necessarily do so at the expense of back action in the form of quantum radiation pressure noise (QRPN)(1). Once at design sensitivity, the gravitational-wave detectors Advanced LIGO(2), VIRGO(3) and KAGRA(4) will be limited by QRPN at frequencies between 10 hertz and 100 hertz. There exist several proposals to improve the sensitivity of gravitational-wave detectors by mitigating QRPN(5-10), but until now no platform has allowed for experimental tests of these ideas. Here we present a broadband measurement of QRPN at room temperature at frequencies relevant to gravitationalwave detectors. The noise spectrum obtained shows effects due to QRPN between about 2 kilohertz and 100 kilohertz, and the measured magnitude of QRPN agrees with our model. We now have a testbed for studying techniques with which to mitigate quantum back action, such as variational readout and squeezed light injection(7), with the aim of improving the sensitivity of future gravitational-wave detectors. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464950700050 |
WOS关键词 | SHOT-NOISE ; FLUCTUATIONS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/202722 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA; 2.MIT, LIGO, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 3.Crystalline Mirror Solut LLC, Santa Barbara, CA USA; 4.Crystalline Mirror Solut GmbH, Vienna, Austria; 5.Univ Vienna, Fac Phys, Vienna Ctr Quantum Sci & Technol VCQ, Vienna, Austria |
推荐引用方式 GB/T 7714 | Cripe, Jonathan,Aggarwal, Nancy,Lanza, Robert,et al. Measurement of quantum back action in the audio band at room temperature[J]. NATURE,2019,568(7752):364-+. |
APA | Cripe, Jonathan.,Aggarwal, Nancy.,Lanza, Robert.,Libson, Adam.,Singh, Robinjeet.,...&Corbitt, Thomas.(2019).Measurement of quantum back action in the audio band at room temperature.NATURE,568(7752),364-+. |
MLA | Cripe, Jonathan,et al."Measurement of quantum back action in the audio band at room temperature".NATURE 568.7752(2019):364-+. |
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