plot_bloch_vector

plot_bloch_vector(bloch, title='', ax=None, figsize=None)

Plot the Bloch sphere.

Plot a sphere, axes, the Bloch vector, and its projections onto each axis.

Parameters

• bloch (list[double]) – array of three elements where [<x>, <y>, <z>]
• title (str) – a string that represents the plot title
• ax (matplotlib.axes.Axes) – An Axes to use for rendering the bloch sphere
• figsize (tuple) – Figure size in inches. Has no effect is passing ax.

Returns

A matplotlib figure instance if ax = None.

Return type

Figure

Raises

ImportError – Requires matplotlib.

Example

from qiskit.visualization import plot_bloch_vector
%matplotlib inline
 
plot_bloch_vector([0,1,0], title="New Bloch Sphere")