Details
| Original language | English |
|---|---|
| Article number | 171101 |
| Journal | Physical review letters |
| Volume | 124 |
| Issue number | 17 |
| Publication status | Published - 1 May 2020 |
Abstract
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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 124, No. 17, 171101, 01.05.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors
AU - Zhao, Yuhang
AU - Aritomi, Naoki
AU - Capocasa, Eleonora
AU - Leonardi, Matteo
AU - Eisenmann, Marc
AU - Guo, Yuefan
AU - Polini, Eleonora
AU - Tomura, Akihiro
AU - Arai, Koji
AU - Aso, Yoichi
AU - Huang, Yao Chin
AU - Lee, Ray Kuang
AU - Lück, Harald
AU - Miyakawa, Osamu
AU - Prat, Pierre
AU - Shoda, Ayaka
AU - Tacca, Matteo
AU - Takahashi, Ryutaro
AU - Vahlbruch, Henning
AU - Vardaro, Marco
AU - Wu, Chien Ming
AU - Barsuglia, Matteo
AU - Flaminio, Raffaele
N1 - Funding information: 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).
PY - 2020/5/1
Y1 - 2020/5/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85084737339&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.171101
DO - 10.1103/PhysRevLett.124.171101
M3 - Article
C2 - 32412296
AN - SCOPUS:85084737339
VL - 124
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 17
M1 - 171101
ER -