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As I could found in here how the transpile works in qiskit, I understood that transpile gets arbitrary Unitary gate $U$ and some set of basis gates as input, and produce some quantum circuit of $U$ implemented with those basis gates.

So, I understood this transpile process as some sort of 'synthesis' problem that has been shown in some literature, but I can't find which synthesis method does Qiskit implemented for their transpile process. Will there be any references or docs that I can refer to?

luciano
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Changu Kang
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1 Answers1

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The function transpile uses unitary synthesis methods. That's done by a transpiler pass called UnitarySynthesis (source code here). Depending on the size of the gate to synthesize it has different methods. For example, single-qubit gates are converted into Euler angle rotations by qiskit.quantum_info.synthesis.OneQubitEulerDecomposer (source code here).

luciano
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