Plotting functions for density matrices, etc. from the QuantumOptics.jl package.

Supported plot types:

• plot_dm() plots a density matrix in a 2D plot inspired by Hinton diagrams, where symbol size represents magnitude and colour represents phase.
• plot_bloch() plots an array of 1-qubit density matrices on the Bloch sphere.

Note: QoPlots.jl requrires a new-ish version of the PyCall Python interface package with support for natural property syntax (JuliaPy/PyCall.jl#517). Installing the latest version from the default repository (add PyPlot) should work without further intervention.