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✨ Parallelization of Noise-free simulation #18

@aaronleesander

Description

@aaronleesander

What's the problem this feature will solve?

During noise-free circuit simulationm we could parallelize TDVP site-wise. Right now, the shots are parallelized at the end during weak simulation, and the trajectories are parallelized during noisy simulation.

Describe the solution you'd like

During circuit simulation, the MPS could be split up into chunks based on the gates in a layer, i.e., if there are two qubit gates at each even site, then the even sites could be done in parallel. This should be do-able since the sites of the MPS are not dependent on each other between parallelized chunks.

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