How to use matplotlib to draw a city state in Qiskit

Question

How to use matplotlib to draw the following image, hoping that the 3D histogram is at the coordinate intersection?

I can only do it as follows

Answer 1

You can check out how to use plot_state_city in the documentation for the visualization function. The example you are showing seems to change the default colors to color=['blue', 'yellow'] and the title:

from qiskit import QuantumCircuit
from qiskit.quantum_info import DensityMatrix
from qiskit.visualization import plot_state_city

qc = QuantumCircuit(2)
qc.h(0)
qc.cx(0, 1)

state = DensityMatrix.from_instruction(qc)
plot_state_city(state, color=['blue', 'yellow'], title="New State City")