#
#  Import modules
#


from qiskit import QuantumCircuit
from qiskit.primitives import StatevectorSampler
from qiskit.visualization import plot_histogram
import matplotlib.pyplot as plt

#
#  Define quantum circuit
#

qc = QuantumCircuit(2)         # q0=q1=0  |00>
qc.x(0)                        # not q0   |01>
qc.x(1)                        # not q1   |11>
qc.cx(0, 1)                    # flip q1 if q0  |01>
qc.measure_all()               # 100% 01


#
# Visualize circuit and resultss
#

qc.draw("mpl")

sampler = StatevectorSampler()
result = sampler.run([qc], shots=1024).result()
print(result[0].data.meas.get_counts())

counts = result[0].data.meas.get_counts()
plot_histogram(counts)
plt.show()