added wrapped decoherence #377
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Added all decoherence channels which can be directly mapped (without unacceptable performance damage) to a cuQuantum call. The cuQuantum calls are: - custatevecApplyMatrix - custatevecApplyGeneralizedPermutationMatrix and are called with matrices (some, diagonal) describing the channel superoperators. The remaining decoherence channels require linearly combining device vectors (may use Thrust), bespoke GPU kernels, or a clever decomposition of the channel (e.g. 2 qubit depolarising) into a sequence of cuStateVec calls
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Added all decoherence channels which can be directly mapped (without unacceptable performance damage) to a cuQuantum call.
The cuQuantum calls are:
and are called with matrices (some, diagonal) describing the channel superoperators.
The remaining decoherence channels require linearly combining device vectors (may use Thrust), bespoke GPU kernels, or a clever decomposition of the channel (e.g. 2 qubit depolarising) into a sequence of cuStateVec calls