Influence of separating distance between atomic sensors for gravitational wave detection

Abstract

We consider a recent scheme of gravitational wave detection using atomic interferometers as inertial sensors, and reinvestigate its configuration using the concept of sensitivity functions. We show that such configuration can suppress noise without influencing the gravitational wave signal.But the suppression is insufficient for the direct observation of gravitational wave signals, so we analyse the behaviour of the different noises influencing the detection scheme. As a novel method, we study the relations between the measurement sensitivity and the distance between two interferometers, and find that the results derived from vibration noise and laser frequency noise are in stark contrast to that derived from the shot noise, which is significant for the configuration design of gravitational wave detectors using atomic interferometers. * Electronic address: zhangbc.zhang@yahoo.com

A protocol of potential advantage in the low frequency range to gravitational wave detection with space based optical atomic clocks

“…However, the infinity is not seen in all figures about the sensitivity curves because data point acquisition is not dense enough in our numerical calculation. Usually, one expects the signal to noise can be improved by the constraint of the common noise modes when the signals of the two separate satellites are compared, as discussed before [34][35][36][37]. Based on the scheme of Fig.…”