Comparison of Quantum Noise in 3G Interferometer Configurations

Document #:

LIGO-T1200008-v3

Document type:

T - Technical notes

Abstract:

There are several configurations proposed in the gravitational-wave community for reducing the quantum noise in future advanced detectors. In this note, we make a systematic comparison among them by considering their sensitivities and complexities. We numerically optimize their sensitivities by introducing a cost function that tries to maximize the broadband improvement over the design sensitivity of advanced LIGO. We find that the frequency-dependent squeezed-light injection with a hundred-meter scale filter cavity shows nice broadband sensitivity and involves a minimal number of additional large optics. This study gives us a guideline for the near-term experimental researches in enhancing the performance of future advanced gravitational-wave detectors.

Files in Document:

• T1200008-v3.pdf (PDF.pdf, 4.3 MB)

Topics:

• Sensing and Control
• Modelling
• Basic R&D

Authors:

• Haixing Miao
• Huan Yang
• Rana Adhikari
• Yanbei Chen

Keywords:

3G quantum noise

Related Documents:

• LIGO-T1200199: Instrument Science White Paper

Referenced by:

• LIGO-T1300433-v3: Instrument Science White Paper