Frequency-Dependent Squeeze Amplitude Attenuation and Squeeze Angle Rotation by Electromagnetically Induced Transparency for Gravitational Wave Interferometers

TL;DR

This paper explores how electromagnetically induced transparency (EIT) can be used to create frequency-dependent squeezing in gravitational wave interferometers, offering advantages over previous filter designs.

Contribution

It introduces new EIT filter configurations for frequency-dependent squeezing, improving optical losses, compactness, and tunability compared to prior methods.

Findings

EIT filters effectively generate frequency-dependent squeezing.

EIT filters outperform previous designs in optical losses and tunability.

Various EIT filter types are proposed for GW interferometers.

Abstract

We study the effects of frequency-dependent squeeze amplitude attenuation and squeeze angle rotation by electromagnetically induced transparency (EIT) on gravitational wave (GW) interferometers. We propose the use of low-pass, band-pass, and high-pass EIT filters, an S-shaped EIT filter, and an intra-cavity EIT filter to generate frequency-dependent squeezing for injection into the antisymmetric port of GW interferometers. We find that the EIT filters have several advantages over the previous filter designs with regard to optical losses, compactness, and the tunability of the filter linewidth.