UnitaryConfiguration

Each Gate is expanded into a Matrix before applying to the unitary Matrix for the entire circuit. Matrix expansion is performed with up to expansionConcurrency threads. If expansionConcurrency is 0 or less, it will be defaulted to 1. This configuration has the biggest memory footprint but it is the fastest.

To apply a Gate to the unitary Matrix for the entire circuit, up to calculationConcurrency rows in the Gate are expanded at the same time and applied to the unitary as needed. In turn, each row will be expanded with up to expansionConcurrency threads, so calculationConcurrency * expansionConcurrency threads might be running concurrently at any given moment. If calculationConcurrency or expansionConcurrency are set to 0 or less, they will be defaulted to 1.

To apply a Gate to the unitary Matrix for the entire circuit, up to calculationConcurrency values in the unitary are calculated simultaneously. Values in Gate are requested one by one and when needed. If calculationConcurrency is 0 or less, it will be defaulted to 1. This configuration is the slowest but it has the smallest memory footprint.