Figure 13

(a)-(c) We plot the trace norm of the Choi matrices of the channels \(\Lambda _{t}^{(1)}\), \(\Lambda _{t}^{(2)}\) and \(\Lambda _{t}^{(T)}\) respectively, for the Markovian channel addition (M + M = nM). For each case, the trace norm is a good enough approximation of 1 to state that the simulated channels are trace-preserving. The deviation and slightly long error bars result from device noise and decoherence