Fig. 2: Optimization in the digital case (SFQ).
From: Global optimization of quantum dynamics with AlphaZero deep exploration
a Illustration of how a SFQ pulse train can be encoded into a bit string, with bits displayed above the figure and gate number below. The figure also contains a zoom-in that depicts the exact shape of a single pulse. b The best obtained infidelity (\(1-{\mathcal{F}}\)) at each gate duration for different discrete optimization algorithms. Each algorithm had 50 h wall time for each gate duration. c A comparison between the infidelities obtained by AlphaZero and the GA at 60 ns. For AlphaZero, each dot represents the infidelity obtained at the end of a unique episode, i.e. generation of an entire pulse-sequence, while for the GA each dot represents the highest scoring member in the population after each iteration.
