qiskit.visualization.plot_coupling_map

qiskit.visualization.plot_coupling_map(num_qubits, qubit_coordinates, coupling_map, figsize=None, plot_directed=False, label_qubits=True, qubit_size=None, line_width=4, font_size=None, qubit_color=None, qubit_labels=None, line_color=None, font_color='white', ax=None, filename=None, *, planar=True)

Plots an arbitrary coupling map of qubits (embedded in a plane).

Parameters

• num_qubits (int) – The number of qubits defined and plotted.
• qubit_coordinates (List[List[int]]) – A list of two-element lists, with entries of each nested list being the planar coordinates in a 0-based square grid where each qubit is located.
• coupling_map (List[List[int]]) – A list of two-element lists, with entries of each nested list being the qubit numbers of the bonds to be plotted.
• figsize (tuple) – Output figure size (wxh) in inches.
• plot_directed (bool) – Plot directed coupling map.
• label_qubits (bool) – Label the qubits.
• qubit_size (float) – Size of qubit marker.
• line_width (float) – Width of lines.
• font_size (int) – Font size of qubit labels.
• qubit_color (list) – A list of colors for the qubits
• qubit_labels (list) – A list of qubit labels
• line_color (list) – A list of colors for each line from coupling_map.
• font_color (str) – The font color for the qubit labels.
• ax (Axes) – A Matplotlib axes instance.
• filename (str) – file path to save image to.
• planar (bool) – If the coupling map is planar or not. Default: True (i.e. it is planar)

Returns

A Matplotlib figure instance.

Return type

Figure

Raises

• MissingOptionalLibraryError – If matplotlib or graphviz is not installed.
• QiskitError – If length of qubit labels does not match number of qubits.

Example

from qiskit.visualization import plot_coupling_map
 
num_qubits = 8
qubit_coordinates = [[0, 1], [1, 1], [1, 0], [1, 2], [2, 0], [2, 2], [2, 1], [3, 1]]
coupling_map = [[0, 1], [1, 2], [2, 3], [3, 5], [4, 5], [5, 6], [2, 4], [6, 7]]
plot_coupling_map(num_qubits, qubit_coordinates, coupling_map)