Quantum Limits in Interferometric GW Antennas in the Presence of Even and Odd coherent states

TL;DR

This paper explores a model for gravitational wave detectors using non-classical light states, specifically even and odd coherent states, as an alternative to squeezed states to improve sensitivity without dissipative elements.

Contribution

It introduces a novel approach using even and odd coherent states in interferometric GW antennas, avoiding dissipative components and potentially reducing input laser power.

Findings

Even and odd coherent states can replace squeezed states in GW detectors.

The model predicts reduced optimal input laser power.

Potential for improved detector sensitivity without active elements.

Abstract

We discuss a model for interferometric GW antennas without dissipative or active elements. It is predicted that the even and odd coherent states may play an alternative role to squeezed vacuum states in reducing the optimal power of the input laser.