Fig. 4: Success probability of random unitaries for different initial states.
From: Verification of a resetting protocol for an uncontrolled superconducting qubit
The random unitaries are realized as Ur shown in (c), where 12 random single-qubit gates are applied before and after a CZ gate. Experimental results are shown in blue; simulated values are in brown. In the simulation, decoherence effect is considered (see “Method”). As shown in case 3 of Table. 1, the free-evolution Hamiltonian is I. In (a) and (b), the initial state is \(\left|-\right\rangle\), and in (c) and (d), the initial state is \(\left|1\right\rangle\). For these two different initial states, the random unitary sets are also different. a, c Success probabilities for each of the 100 random unitaries; inset: the trace distances for each unitary. The experimental and simulated results are shown in blue and brown bars, respectively. b, d Cumulative average of success probabilities. The experimental and simulated results are shown in blue triangles and brown dashed line, respectively.
