Broadband Quantum Noise Reduction in Advanced Virgo Plus
From Frequency-Dependent Squeezing Implementation to Detection Losses and Stray Light Mitigation
Series: Springer Theses;
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66 563 Ft
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Product details:
- Publisher Springer Nature Switzerland
- Date of Publication 12 August 2025
- Number of Volumes 1 pieces, Book
- ISBN 9783031951428
- Binding Hardback
- No. of pages248 pages
- Size 235x155 mm
- Language English
- Illustrations XXI, 248 p. 150 illus., 145 illus. in color. Illustrations, black & white 686
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Long description:
This book presents the first implementation of frequency-dependent squeezing in the Virgo gravitational wave detector, a technique that reduces quantum noise across the entire detection band. By lowering noise, it enhances Virgo’s ability to observe the universe.
It provides a detailed account of the experimental optical system—spanning hundreds of meters—and the measurement campaign that led to the first observation of frequency-dependent squeezing, with ellipse rotation occurring at the target frequency of a few tens of Hz. Additionally, the book covers the characterization and commissioning of a new Output Mode Cleaner cavity in Virgo to minimize optical losses on squeezed states. Finally, it examines the impact of stray light noise at low frequencies and explores mitigation strategies to improve detector sensitivity.
MoreTable of Contents:
Gravitational waves.- Ground based gravitational waves detectors.- Theory of quantum light in gravitational waves detectors.- Quantum noise reduction system overview in Advanced Virgo Plus.- Quantum noise reduction system commissioning.- Stray light in gravitational waves detectors.- Ghost beams study and mitigation.- Active control of scattered light on the FDS system.- Matching of the squeezing beam to the ITF.- New high finesse Output Mode Cleaner for Advanced Virgo Plus.
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