Optimize targeted_left_multiply for onehot source#5905
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daxfohl wants to merge 8 commits into
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@viathor Also closing this one because the new call to |
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For onehot
left_matrix, this is just a slice that's moved and multiplied by a constant. Speeds up 2x2 Kraus components by two times, 4x4 by six times, and so on. Will be useful for the_ConfusionChannelin #5851Fixes #5903