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Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors

Zhao, Yuhang and Aritomi, Naoki and Capocasa, Eleonora and Leonardi, Matteo and Eisenmann, Marc and Guo, Yuefan and Polini, Eleonora and Tomura, Akihiro and Arai, Koji and Aso, Yoichi and Huang, Yao-Chin and Lee, Ray-Kuang and Lück, Harald and Miyakawa, Osamu and Prat, Pierre and Shoda, Ayaka and Tacca, Matteo and Takahashi, Ryutaro and Vahlbruch, Henning and Vardaro, Marco and Wu, Chien-Ming and Barsuglia, Matteo and Flaminio, Raffaele (2020) Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors. Physical Review Letters, 124 (17). Art. No. 171101. ISSN 0031-9007. doi:10.1103/physrevlett.124.171101.

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The astrophysical reach of current and future ground-based gravitational-wave detectors is mostly limited by quantum noise, induced by vacuum fluctuations entering the detector output port. The replacement of this ordinary vacuum field with a squeezed vacuum field has proven to be an effective strategy to mitigate such quantum noise and it is currently used in advanced detectors. However, current squeezing cannot improve the noise across the whole spectrum because of the Heisenberg uncertainty principle: when shot noise at high frequencies is reduced, radiation pressure at low frequencies is increased. A broadband quantum noise reduction is possible by using a more complex squeezing source, obtained by reflecting the squeezed vacuum off a Fabry-Perot cavity, known as filter cavity. Here we report the first demonstration of a frequency-dependent squeezed vacuum source able to reduce quantum noise of advanced gravitational-wave detectors in their whole observation bandwidth. The experiment uses a suspended 300-m-long filter cavity, similar to the one planned for KAGRA, Advanced Virgo, and Advanced LIGO, and capable of inducing a rotation of the squeezing ellipse below 100 Hz.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper InPhysics : Synopsis
Zhao, Yuhang0000-0003-2542-4734
Capocasa, Eleonora0000-0003-3762-6958
Polini, Eleonora0000-0003-4059-0765
Arai, Koji0000-0001-8916-8915
Aso, Yoichi0000-0002-1902-6695
Lee, Ray-Kuang0000-0002-7171-7274
Lück, Harald0000-0001-9350-4846
Shoda, Ayaka0000-0002-0236-4735
Takahashi, Ryutaro0000-0003-1367-5149
Wu, Chien-Ming0000-0003-3191-8845
Additional Information:© 2020 American Physical Society. Received 23 February 2020; accepted 23 March 2020; published 28 April 2020. We thank R. Schnabel, D. Tatsumi, E. Schreiber, L. Pinard, K. Somiya, J. Degallaix, S. R. Wu, Y. Enomoto, L. Trozzo, S. Zeidler, M. Marchiò, N. Hirata, I. Fiori, P. Ruggi, F. Paoletti, C. De Rossi, T. Akutsu, T. Tomaru, E. Majorana, K. Izumi, M. Mantovani, and J. Baird for the useful contributions and discussions. We thank S. Oshino, T. Yamamoto, and Y. Fujii for the help with the digital control system. We thank also the Advanced Technology Center (ATC) of NAOJ for the support. This work was supported by the JSPS Grant-in-Aid for Scientific Research (Grants No. 15H02095 and No. 18H01235), the JSPS Core-to-Core Program, and the EU Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant Agreement No. 734303. N. A. was supported by JSPS Grant-in-Aid for Scientific Research (Grants No. 18H01224 and No. 18K18763) and JST CREST (Grant No. JPMJCR1873).
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)15H02095
Japan Society for the Promotion of Science (JSPS)18H01235
Marie Curie Fellowship734303
Japan Society for the Promotion of Science (JSPS)18H01224
Japan Society for the Promotion of Science (JSPS)18K18763
Japan Science and Technology Agency (JST)JPMJCR1873
Issue or Number:17
Record Number:CaltechAUTHORS:20200428-145815297
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102890
Deposited By: Tony Diaz
Deposited On:28 Apr 2020 22:15
Last Modified:16 Nov 2021 18:16

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