Quantum noise in gravitational-wave interferometers: Overview and recent developments
Thomas Corbitt, Nergis Mavalvala
TL;DR
This paper reviews quantum noise in gravitational-wave interferometers, discussing recent theoretical developments, the impact of interferometer configurations, and the potential of squeezed light to improve future detector sensitivity.
Contribution
It provides a comprehensive overview of quantum noise treatment in complex interferometer configurations and explores the use of squeezed light in future gravitational-wave detectors.
Findings
Recent theoretical frameworks for quantum noise in complex interferometers
Analysis of squeezed light benefits and limitations in gravitational-wave detection
Evaluation of optimal readout schemes for future detectors
Abstract
We present an overview of quantum noise in gravitational wave interferometers. Gravitational wave detectors are extensively modified variants of a Michelson interferometer and the quantum noise couplings are strongly influenced by the interferometer configuration. We describe recent developments in the treatment of quantum noise in the complex interferometer configurations of present-day and future gravitational-wave detectors. In addition, we explore prospects for the use of squeezed light in future interferometers, including consideration of the effects of losses, and the choice of optimal readout schemes.
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