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Fix Qiskit Aer deprecation warnings #322

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Fix Qiskit Aer deprecation warnings #322

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5 changes: 3 additions & 2 deletions examples/quest/utils/fide_pst.py
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,8 @@
import sys
import copy
from qiskit import QuantumCircuit
from qiskit import Aer, transpile
from qiskit import transpile
from qiskit_aer import AerSimulator
from rand_circ_native import *


Expand Down Expand Up @@ -62,7 +63,7 @@ def get_modified_backend(backend, mydict):


def free_sim(circ):
backend = Aer.get_backend("aer_simulator")
backend = AerSimulator()
circ.save_density_matrix()
result = backend.run(circ).result()
noise_dm = result.data()["density_matrix"].data
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4 changes: 2 additions & 2 deletions test/layers/test_rotgate.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import torchquantum as tq
import qiskit
from qiskit_aer import Aer
from qiskit_aer import AerSimulator
from qiskit import transpile

from torchquantum.util import (
Expand Down Expand Up @@ -36,7 +36,7 @@ def test_rotgates():
qiskit_circuit = pair["qiskit"](num_wires, *params)

# get the unitary from qiskit
backend = Aer.get_backend("unitary_simulator")
backend = AerSimulator(method='unitary')
qiskit_circuit = transpile(qiskit_circuit, backend)
result = backend.run(qiskit_circuit).result()
unitary_qiskit = result.get_unitary(qiskit_circuit)
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4 changes: 2 additions & 2 deletions test/measurement/test_measure.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@
import torchquantum as tq

from torchquantum.plugin import op_history2qiskit
from qiskit_aer import Aer
from qiskit_aer import AerSimulator
from qiskit import transpile
import numpy as np

Expand All @@ -43,7 +43,7 @@ def test_measure():

circ = op_history2qiskit(qdev.n_wires, qdev.op_history)
circ.measure_all()
simulator = Aer.get_backend("aer_simulator")
simulator = AerSimulator()
circ = transpile(circ, simulator)
qiskit_res = simulator.run(circ, shots=n_shots).result()
qiskit_counts = qiskit_res.get_counts()
Expand Down