From error suppression to error mitigation in quantum algorithms

Arguably, the most pressing challenge faced by developers of quantum computers, is to reduce the effects of noise and inaccuracies on the performance of quantum circuits. This is important not only for the ability to run useful quantum algorithms in the "NISQ era", namely with the relatively small and noisy quantum computers available today, but also for lowering the barriers and reducing the immense resources required for achieving the holy grail of quantum fault tolerance. Quite a few tools have been developed for this task, under the names of error suppression and error mitigation. In this talk I will introduce the error suppression and mitigation software developed at QEDMA Quantum Computing, and present experimental demonstrations of significant improvements in performance achieved when applying this software to several quantum algorithms and devices.