Before revision: SFQ voltage pulses travel on superconducting transmission lines which have very small, and usually negligible, dispersion if no spectral component if the pulse is above the frequency of the energy gap of the superconductor.
After revision: SFQ voltage pulses travel on superconducting transmission lines which have very small, and usually negligible, dispersion of no spectral component if the pulse is above the frequency of the energy gap of the superconductor.