S. Gaudio

The Quantum Noise Fraction and the Addressable Fraction in High-Frequency Gravitational Wave Detection

Abstract The quantum noise fraction β, the quantum-origin share of a detector's noise power, sets a ceiling E_max = 1/√(1−β) on the improvement obtainable by removing that noise. In the kHz–GHz band, where the readout degree of freedom is a bosonic mode, β = 1/(2n̄_th+1), with n̄...