# Noisy simulator¶

Note

Every time that a Circuit is run on a Simulator, the results are overwritten.

import trueq as tq
import numpy as np

# Define the circuit we are interested in
circuit = tq.Circuit({0: tq.Gate.x, 1: tq.Gate.y}, {(0, 1): tq.Gate.cz})
circuit.measure_all()

# Initialize a noiseless simulator.
sim0 = tq.Simulator()

# Initialize a simulator with depolarizing noise at 8% per qubit.

# Initialize a simulator with pauli noise and overrotation.
sim2 = (
tq.Simulator()
)

# Initialize a simulator with dephasing noise.
kraus_ops = [np.sqrt(0.99) * np.eye(2), np.sqrt(0.01) * np.diag([1, -1])]

# Initialize a simulator with state preparation and measurement errors

# Run circuit on each of the simulators above and print the results.
sim0.run(circuit)
print(f"{'Ideal':>28}:", circuit.results)


Out:

Ideal: Results({'11': 50})

sim1.run(circuit, overwrite=True)
print(f"{'Depolarizing':>28}:", circuit.results)


Out:

Depolarizing: Results({'01': 1, '10': 3, '11': 46})

sim2.run(circuit, overwrite=True)
print(f"{'Stochastic w/ overrotation':>28}:", circuit.results)


Out:

Stochastic w/ overrotation: Results({'01': 2, '10': 1, '11': 47})

sim3.run(circuit, overwrite=True)
print(f"{'Dephasing':>28}:", circuit.results)


Out:

Dephasing: Results({'11': 50})

sim4.run(circuit, overwrite=True)
print(f"{'SPAM Error':>28}:", circuit.results)


Out:

SPAM Error: Results({'01': 1, '11': 49})


Total running time of the script: ( 0 minutes 0.010 seconds)

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