Benchmarking digital-analog quantum algorithms against their digital version

The digital-analog quantum computation (DAQC) paradigm combines local unitaries with the analog evolution of a device. This potentially increases the robustness of quantum computations with respect to digital quantum computation (DQC) in noisy intermediate-scale quantum (NISQ) devices. In this work, we analyze this by presenting simulations of the ideal evolution of a DAQC algorithm on a star topology chip. Then, we include in the simulations some of the main error sources that exist in NISQ devices. For our simulations, we use our recently developed software framework for designing digital-analog quantum algorithms that can be adapted to specific quantum architectures.