qiskit-gridsynth-plugin 0.0.5

A small package for integrating gridsynth angle decomposition into qiskit.

Qiskit GridSynth plugin

This package integrates angle decomposition with gridsynth [1] into the qiskit [2] software stack, facilitating efficient transpilation to the Clifford+T gate set.

Installation

Install via pip:

pip install qiskit_gridsynth_plugin

Example Usage

Read a circuit from a qasm file circ.qasm, transpile to Clifford+T, and write the result to out.qasm

from qiskit import QuantumCircuit
from qiskit_gridsynth_plugin.decompose import clifford_t_transpile
circ = QuantumCircuit.from_qasm_file('circ.qasm')
decomposed = clifford_t_transpile(circ, approx_exp=-4)
qiskit.qasm2.dump(decomposed, "out.qasm")

Include gridsynth angle decomposition as part of a qiskit compilation pipeline that also cancels out back-to-back CNOT gates.

from qiskit.circuit.library.standard_gates import CXGate
from qiskit.transpiler import PassManager
from qiskit.transpiler.passes import InverseCancellation
from qiskit_gridsynth_plugin.decompose import GridSynth
circ = QuantumCircuit.from_qasm_file('circ.qasm')
pm = PassManager(InverseCancellation([CXGate()]), GridSynth(-4))
decomposed = pm.run(circ)

References

[1] N. J. Ross and P. Selinger, "Optimal ancilla-free Clifford+T approximation of z-rotations", arXiv:1403.2975
[2] https://www.ibm.com/quantum/qiskit