|q⟩
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Multiple choice
A qubit is prepared in the state
∣
+
⟩
=
(
∣
0
⟩
+
∣
1
⟩
)
/
2
|+\rangle = (|0\rangle + |1\rangle)/\sqrt{2}
∣
+
⟩
=
(
∣0
⟩
+
∣1
⟩)
/
2
. In the ideal (infinite-shot) limit, what is the probability of measuring outcome
∣
0
⟩
|0\rangle
∣0
⟩
in the computational basis?
🔬 try it before you answer
1
/
4
1/4
1/4
1
/
2
≈
0.707
1/\sqrt{2} \approx 0.707
1/
2
≈
0.707
1
/
2
=
0.5
1/2 = 0.5
1/2
=
0.5
1
Check answer