Hi everyone,

I’m currently working on a project . Here’s the core of my setup:

backend = pcvl.Simulator(pcvl.NaiveBackend())

input_states = {

pcvl.BasicState([1, 0, 1, 0, 1, 0, 1, 0, 1, 0]): “|00000>”

}

output_states = {

pcvl.BasicState([1, 0, 1, 0, 1, 0, 1, 0, 1, 0]): “|00000>”,

pcvl.BasicState([1, 0, 1, 0, 1, 0, 1, 0, 0, 1]): “|00001>”,

pcvl.BasicState([1, 0, 1, 0, 1, 0, 0, 1, 1, 0]): “|00010>”,

# … (other states)

pcvl.BasicState([0, 1, 0, 1, 0, 1, 0, 1, 0, 1]): “|11110>”

}

Hamiltonian_elem = np.diag([1 if ‘{:05b}’.format(i)[-1] == ‘0’ else -1 for i in range(32)])

for j, value in enumerate(initial_point_2):

param_circuit[j + 5].set_value(value)

backend.set_circuit(VQE)

psi = []

for input_state in input_states:

for output_state in output_states:

psi.append(backend.prob_amplitude(input_state, output_state))

I am trying to figure out how to introduce noise into the backend. The is to get a noise-affected density matrix , I calcualte through the calculation of probability amplitudes. I would greatly appreciate any guidance or resources you could provide on implementing noise processes in a simulator .

Thank you very much for any help.

Andres