What information does the Bloch sphere visualization provide in quantum computing?

• A.A graphical representation of quantum circuits
• B.The probability amplitudes of qubits
• C.A display of gate errors and noise in quantum systems
• D.Connectivity details of quantum hardware

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Gates X, Y, and Z perform rotations on a Bloch sphere around the x-, y- and z-axis, respectively.
By which angle are these rotations performed?

• A.π
• B.π/4
• C.3π/4
• D.π/8

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Predict the output of the average_gate_fidelity, process_fidelity of the below snippet:
a = Operator(XGate())
b = np.exp(1j /3) * a
average_gate_fidelity(a,b)
process_fiedlity(a,b)

• A.average_gate_fidelity will be 1.0 and process_fidelity will be 0.5
• B.average_gate_fidelity will be 0.5 and process_fidelity will be 1.0
• C.average_gate_fidelity will be 0 and process_fidelity will be 0.5
• D.average_gate_fidelity will be 1.0 and process_fidelity will be 1.0

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Which gate will results in if we successively applied two S-gates?

• A.T-gate
• B.Y-gate
• C.X-gate
• D.Z-gate

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In the quantum circuit, choose the best option to display the plot given below?
qc= QuantumCircuit(3)
qc.h(0)
qc.x(1)
qc.cx(0,1)
qc.h(2)
qc.cx(1,2)
qc.measure_all()
backend_qasm = BasicAer.get_backend('qasm_simulator')
job = execute(qc, backend_qasm,shots=1024)
result = job.result().get_counts()

• A.
• B.
• C.
• D.

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