Source code for qiskit.synthesis.clifford.clifford_decompose_full

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# (C) Copyright IBM 2017, 2022
# This code is licensed under the Apache License, Version 2.0. You may
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Circuit synthesis for the Clifford class for all-to-all architecture.

from qiskit.synthesis.clifford.clifford_decompose_ag import synth_clifford_ag
from qiskit.synthesis.clifford.clifford_decompose_bm import synth_clifford_bm
from qiskit.synthesis.clifford.clifford_decompose_greedy import synth_clifford_greedy

[docs]def synth_clifford_full(clifford, method=None): """Decompose a Clifford operator into a QuantumCircuit. For N <= 3 qubits this is based on optimal CX cost decomposition from reference [1]. For N > 3 qubits this is done using the general non-optimal greedy compilation routine from reference [3], which typically yields better CX cost compared to the AG method in [2]. Args: clifford (Clifford): a clifford operator. method (str): Optional, a synthesis method ('AG' or 'greedy'). If set this overrides optimal decomposition for N <=3 qubits. Return: QuantumCircuit: a circuit implementation of the Clifford. References: 1. S. Bravyi, D. Maslov, *Hadamard-free circuits expose the structure of the Clifford group*, `arXiv:2003.09412 [quant-ph] <https://arxiv.org/abs/2003.09412>`_ 2. S. Aaronson, D. Gottesman, *Improved Simulation of Stabilizer Circuits*, Phys. Rev. A 70, 052328 (2004). `arXiv:quant-ph/0406196 <https://arxiv.org/abs/quant-ph/0406196>`_ 3. Sergey Bravyi, Shaohan Hu, Dmitri Maslov, Ruslan Shaydulin, *Clifford Circuit Optimization with Templates and Symbolic Pauli Gates*, `arXiv:2105.02291 [quant-ph] <https://arxiv.org/abs/2105.02291>`_ """ num_qubits = clifford.num_qubits if method == "AG": return synth_clifford_ag(clifford) if method == "greedy": return synth_clifford_greedy(clifford) if num_qubits <= 3: return synth_clifford_bm(clifford) return synth_clifford_greedy(clifford)