  We have measured, in real time, individual quasiparticle tunneling in a
single Cooper pair transistor, using rf reflectometry on the supercurrent
branch. We have extracted the even-to-odd and odd-to-even transition rates
directly by analyzing the distributions of dwell times in the even and odd
states of the transistor. We discuss both the measurement and analysis
techniques and report on the temperature and gate dependence of the
quasiparticle tunneling rates.
