First Demonstration of 6 dB Quantum Noise Reduction in a Kilometer Scale Gravitational Wave Observatory

verfasst von: J. D. Lough, E. Schreiber, Fabio Bergamin, Hartmut Grote, Moritz Mehmet, Henning Vahlbruch, Christoph Affeldt, Marc Brinkmann, Aparna Bisht, Volker Kringel, Harald Lück, Borja Sorazu, Kenneth Strain, N. Mukund, S. L. Nadji, M. Weinert, Karsten Danzmann
Abstract: Photon shot noise, arising from the quantum-mechanical nature of the light, currently limits the sensitivity of all the gravitational wave observatories at frequencies above one kilohertz. We report a successful application of squeezed vacuum states of light at the GEO 600 observatory and demonstrate for the first time a reduction of quantum noise up to 6.03±0.02 dB in a kilometer scale interferometer. This is equivalent at high frequencies to increasing the laser power circulating in the interferometer by a factor of 4. Achieving this milestone, a key goal for the upgrades of the advanced detectors required a better understanding of the noise sources and losses and implementation of robust control schemes to mitigate their contributions. In particular, we address the optical losses from beam propagation, phase noise from the squeezing ellipse, and backscattered light from the squeezed light source. The expertise gained from this work carried out at GEO 600 provides insight toward the implementation of 10 dB of squeezing envisioned for third-generation gravitational wave detectors.
Organisationseinheit(en): QuantumFrontiers
Institut für Gravitationsphysik
Externe Organisation(en): Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Cardiff University
University of Glasgow
Typ: Artikel
Journal: Physical review letters
Band: 126
Anzahl der Seiten: 7
ISSN: 0031-9007
Publikationsdatum: 26.01.2021
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Physik und Astronomie (insg.)
Elektronische Version(en): https://doi.org/10.1103/PhysRevLett.126.041102 (Zugang: Offen)

BibTeX

@article{20df495671e3432d9e22db953dc93225,
title = "First Demonstration of 6 dB Quantum Noise Reduction in a Kilometer Scale Gravitational Wave Observatory",
abstract = "Photon shot noise, arising from the quantum-mechanical nature of the light, currently limits the sensitivity of all the gravitational wave observatories at frequencies above one kilohertz. We report a successful application of squeezed vacuum states of light at the GEO 600 observatory and demonstrate for the first time a reduction of quantum noise up to 6.03±0.02 dB in a kilometer scale interferometer. This is equivalent at high frequencies to increasing the laser power circulating in the interferometer by a factor of 4. Achieving this milestone, a key goal for the upgrades of the advanced detectors required a better understanding of the noise sources and losses and implementation of robust control schemes to mitigate their contributions. In particular, we address the optical losses from beam propagation, phase noise from the squeezing ellipse, and backscattered light from the squeezed light source. The expertise gained from this work carried out at GEO 600 provides insight toward the implementation of 10 dB of squeezing envisioned for third-generation gravitational wave detectors.",
author = "Lough, {J. D.} and E. Schreiber and Fabio Bergamin and Hartmut Grote and Moritz Mehmet and Henning Vahlbruch and Christoph Affeldt and Marc Brinkmann and Aparna Bisht and Volker Kringel and Harald L{\"u}ck and Borja Sorazu and Kenneth Strain and N. Mukund and Nadji, {S. L.} and M. Weinert and Karsten Danzmann",
note = "Funding Information: The authors would like to thank Walter Grass for his years of expert support in the maintenance of critical infrastructure to the site to include the extensive vacuum system. The authors are grateful for support from the Science and Technology Facilities Council Grant Ref: ST/L000946/1, the University of Glasgow in the United Kingdom, the Bundesministerium f{\"u}r Bildung und Forschung, the state of Lower Saxony in Germany, the Max Planck Society, Leibniz Universit{\"a}t Hannover, and Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany{\textquoteright}s Excellence Strategy—EXC 2123 QuantumFrontiers—390837967. This work was partly supported by DFG grant SFB/Transregio 7 Gravitational Wave Astronomy. This document has been assigned LIGO document number LIGO-P2000032.",
year = "2021",
month = jan,
day = "26",
doi = "10.1103/PhysRevLett.126.041102",
language = "English",
volume = "126",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "4",
}