Probability index optimization for multi-shot simulation in quantum computing

Abstract

A computer-implemented method is provided for reducing a measure time of a measure process in a multi-shot simulation performed by a quantum computing simulation system. The method includes calculating probabilities from probability amplitudes before the measure process. The method further includes creating, for each node of the quantum computing simulation system, an index of probability by incrementally summing respective different ones of the probabilities into respective sums. The method also includes generating a random number for each of the multi-shots, the random number for sampling a probability distribution of the probabilities. The method additionally includes selecting the index of probability which is larger than the random number by comparing the random number generated for a given one of the multi-shots to the index of probability created for the given one of the multi-shots.