Attempt at implementing optimal cutting of a single gate #568
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garrison
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There is a revised version of the paper out, at https://arxiv.org/abs/2312.11638v3, which describes the operations in a new appendix. The general operation does indeed require an ancilla qubit on each side of the cut. |
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This is my attempt to implement the optimal cutting of a single two-qubit gate following https://arxiv.org/abs/2312.11638. I have written out the local operations in terms of the operations in https://arxiv.org/abs/2006.11174 and combined like terms, and everything works. However, my new test that
1 <= gamma <= 7fails, so I think this may be equivalent to the previous code in terms of overhead and therefore not actually optimal 馃槥. At the moment, I am not sure if it is going to be possible to implement the local channels in the new paper given only single-qubit unitaries and projective measurements (i.e., without projective measurements on ancilla qubits). I will keep thinking about these channels and ask around.Fixes #531.