التفاصيل البيبلوغرافية
| العنوان: |
Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors. |
| المؤلفون: |
Yuhang Zhao1,2, Naoki Aritomi3, Eleonora Capocasa1 eleonora.capocasa@nao.ac.jp, Matteo Leonardi1 matteo.leonardi@nao.ac.jp, Eisenmann, Marc4, Guo, Yuefan5, Polini, Eleonora4, Akihiro Tomura6, Arai, Koji7, Yoichi Aso1, Yao-Chin Huang8, Lee, Ray-Kuang8, Lück, Harald9, Osamu Miyakawa10, Prat, Pierre11, Ayaka Shoda1, Tacca, Matteo5, Ryutaro Takahashi1, Vahlbruch, Henning9, Vardaro, Marco5,12,13 |
| المصدر: |
Physical Review Letters. 5/1/2020, Vol. 124 Issue 17, p1-1. 1p. |
| مصطلحات موضوعية: |
*GRAVITATIONAL waves, *NOISE control, *QUANTUM noise, *SQUEEZED light, *HEISENBERG uncertainty principle, *VACUUM, *DETECTORS, *RADIATION pressure |
| مستخلص: |
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. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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