Figure 4From: Multi-qubit joint measurements in circuit QED: stochastic master equation analysis The approximate matched filter given by Eq. ( 58 ), for use in obtaining a measurement signal \(\pmb{s(\tau)}\) given a photocurrent time trace \(\pmb{j(t)}\) . The filter function can be thought of as assigning an importance to the photocurrent emitted at time t; this filter function assigns high importance during the steady-state phase of the measurement, and low importance at other times.Back to article page