Entangled-path interferometer simpler, faster than LISA

TL;DR

This paper proposes a simplified and faster entangled-path interferometer for space-based gravitational wave detection, offering comparable resolution to LISA without complex satellite systems.

Contribution

It introduces an alternative, less complex design for space interferometers using entangled light, reducing the need for active satellite components.

Findings

Achieves similar resolution to LISA with simpler setup

Reduces complexity and cost of space-based interferometers

Demonstrates feasibility through back-of-the-envelope calculations

Abstract

Entangled light can provide a seminal improvement in resolution sensitivity even without achieving Heisenberg limit in a single channel. In this paper, based on the back-of-the-envelope type calculations, I demonstrate an alternative path to space based long-arm interferometer. Its advantage with respect to LISA is that it does not require complex satellites with many active components to achieve similar resolution.