frankzickert

# YOUR CODE GOES HERE
qc.ry(prob_to_angle(0.7), 0)

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from math import asin, sqrt

def prob_to_angle(theta):
    return 2*asin(sqrt(theta))

frankzickert

from qiskit import QuantumCircuit, execute, Aer
from qiskit.visualization import plot_histogram

# Create a quantum circuit with one qubit
qc = QuantumCircuit(1)

# YOUR CODE GOES HERE
qc.ry(pi/2, 0)

# measure the qubit

frankzickert

from qiskit import QuantumRegister, QuantumCircuit, ClassicalRegister, Aer, execute
from qiskit.visualization import plot_histogram

DIGITS = 3

def oracle(secret, as_gate=True):
    o_qc = QuantumCircuit(DIGITS+1)
    
    for i in range(DIGITS):
        if secret[::-1][i] == '1':

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from qiskit import Aer, execute
from qiskit.visualization import plot_histogram

results = execute(qc,Aer.get_backend('qasm_simulator'), shots=1000).result().get_counts()
plot_histogram(results)

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from qiskit import ClassicalRegister

cr = ClassicalRegister(DIGITS, "cr")

qr = QuantumRegister(DIGITS, "digits")
qc = QuantumCircuit(qr, aux, cr)

# ...

qc.measure(qr, cr)

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qc.h(qr)

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qc.append(oracle('101'), [*qr, *aux])

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def oracle(secret, as_gate=True):
    o_qc = QuantumCircuit(DIGITS+1)
    
    for i in range(DIGITS):
        if secret[::-1][i] == '1':
            o_qc.cx(i,DIGITS)
        else:
            o_qc.i(i)

    return o_qc.to_gate(label="oracle") if as_gate else o_qc

frankzickert

qc.x(aux)
qc.h(aux)