Paired carriers as a way to reduce quantum noise of multi-carrier gravitational-wave detectors

Abstract

We explore new regimes of laser interferometric gravitational-wave detectors with multiple optical carriers which allow to reduce the quantum noise of these detectors. In particular, we show that using two carriers with the opposite detunings, homodyne angles, and squeezing angles, but identical other parameters (the antisymmetric carriers), one can suppress the quantum noise in such a way that its spectrum follows the Standard Quantum Limit (SQL) at low frequencies. Relaxing this antisymmetry condition, it is also possible to slightly overcome the SQL in broadband. Combining several such pairs in the xylophone configuration, it is possible to shape the quantum noise spectrum flexibly.

References in corpus (3)

• Scientific Objectives of Einstein Telescope
• Double optical spring enhancement for gravitational wave detectors
• Negative optical inertia for enhancing the sensitivity of future gravitational-wave detectors

Cited by in corpus (1)

• Engineering the Optical Spring via Intra-Cavity Optical-Parametric Amplification