Fig. 4: Simulation of the depolarising channel.
From: IBM Q Experience as a versatile experimental testbed for simulating open quantum systems
Tomography of a single-qubit density matrix initially prepared in the state \(\left|{\psi }_{0}\right\rangle =\cos \pi /8\left|0\right\rangle +\sin \pi /8{e}^{i\pi /4}\left|1\right\rangle\), for various values of the parameter \(p\) (cf. Eq. (12)).
