Optimization for XX, YY, ZZ rotations in MPS simulator #1691
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Description
These are 2-body ops that are commonly used in quantum applications.
Without frontend exposure of (Rxx/XXPhase, Ryy/YYPhase, Rzz/ZZPhase) gates, users need to write them in the decomposed form or using
exp_pauli
. Both results in 2 CNOT gates.This is not ideal for MPS since we want to minimize the number of 2-q gates.
Hence, add a special handling in MPS for these cases.