How can I save quantum gates as a graphic in png/svg format using Qiskit?
I am working with Qiskit for programming quantum circuits. Everything works fine but there is one thing which I didn't find out.
Here is my Python code:
from qiskit import QuantumCircuit
qc = QuantumCircuit(2)
qc.h(0)
qc.cx(0, 1)
qc.draw(output = "mpl")
This is my output:
I am only interested into the graphical representation of the Hadamard gate (red one). I need it for a description. I don't need the wires and the qubits. How can I save the Hadamard gate as png/svg file using Qiskit?
Solution
This worked with me:
from qiskit import QuantumCircuit
from qiskit.visualization import circuit_drawer
qc = QuantumCircuit(1)
qc.h(0)
circuit_img = circuit_drawer(qc, output='mpl', scale=2)
circuit_img.savefig('hadamard_gate.png') # save figure as PNG
circuit_img.savefig('hadamard_gate.svg') # save figure as SVG
cf. https://docs.quantum.ibm.com/api/qiskit/qiskit.visualization.circuit_drawer for additional info
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