bloch_disc¶

bloch_disc(rho, figsize=None, title=None, colormap=None, as_widget=False)[source]¶

Plot a Bloch disc for a single qubit.

Parameters

rho (list or ndarray or Statevector or DensityMatrix) – Input statevector, density matrix, or Bloch components.
figsize (tuple) – Figure size in pixels, default=(200,275).
title (str) – Plot title.
colormap (Colormap) – A matplotlib colormap.
as_widget (bool) – Return plot as a widget.

Returns

A Plotly figure instance PlotlyWidget : A Plotly widget if as_widget=True.

Return type

PlotlyFigure

Example

import numpy as np
from qiskit import *
from qiskit.quantum_info import Statevector

from kaleidoscope.interactive import bloch_disc
qc = QuantumCircuit(1)
qc.ry(np.pi*np.random.random(), 0)
qc.rz(np.pi*np.random.random(), 0)

state = Statevector.from_instruction(qc)
bloch_disc(state)

bloch_sphere bloch_multi_disc