|q⟩
Bad Qubits
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Multiple choice
A qubit
α
∣
0
⟩
+
β
∣
1
⟩
\alpha|0\rangle + \beta|1\rangle
α
∣0
⟩
+
β
∣1
⟩
has
β
=
4
/
5
\beta = 4/5
β
=
4/5
. What is the probability of measuring
∣
1
⟩
|1\rangle
∣1
⟩
?
🔬 try it before you answer
8
/
5
=
1.6
8/5 = 1.6
8/5
=
1.6
1/2
4
/
5
=
0.8
4/5 = 0.8
4/5
=
0.8
16
/
25
=
0.64
16/25 = 0.64
16/25
=
0.64
Check answer