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---
title: synth_cnotdihedral_full
description: API reference for qiskit.synthesis.synth_cnotdihedral_full
in_page_toc_min_heading_level: 1
python_api_type: function
python_api_name: qiskit.synthesis.synth_cnotdihedral_full
---
<span id="qiskit-synthesis-synth-cnotdihedral-full" />
# qiskit.synthesis.synth\_cnotdihedral\_full
<Function id="qiskit.synthesis.synth_cnotdihedral_full" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.24/qiskit/synthesis/cnotdihedral/cnotdihedral_decompose_full.py" signature="synth_cnotdihedral_full(elem)">
Decompose a CNOTDihedral element into a QuantumCircuit. For N \<= 2 qubits this is based on optimal CX cost decomposition from reference \[1]. For N > 2 qubits this is done using the general non-optimal compilation routine from reference \[2].
**Parameters**
**elem** ([*CNOTDihedral*](qiskit.quantum_info.CNOTDihedral "qiskit.quantum_info.CNOTDihedral")) a CNOTDihedral element.
**Returns**
a circuit implementation of the CNOTDihedral element.
**Return type**
[QuantumCircuit](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")
**References**
1. Shelly Garion and Andrew W. Cross, *Synthesis of CNOT-Dihedral circuits with optimal number of two qubit gates*, [Quantum 4(369), 2020](https://quantum-journal.org/papers/q-2020-12-07-369/)
2. Andrew W. Cross, Easwar Magesan, Lev S. Bishop, John A. Smolin and Jay M. Gambetta, *Scalable randomised benchmarking of non-Clifford gates*, npj Quantum Inf 2, 16012 (2016).
</Function>