Figure 7
Optimization results for HOM-based test of gravitational effects on quantum interference, as a function of photon bandwidth σ. Note: This is the bandwidth of each individual spectral component (e.g., in Eq. (19)), not to be confused with the separation Δω of those spectral components in the non-degenerate case. In the noiseless, \(p=1\) case, \(\Delta \tau ^{Deg}_{\mathrm{opt}} = 1/(2\sigma )\), the \(1/e\) coherence time