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Bad Qubits
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Multiple choice
Start with bit
b
=
1
b = 1
b
=
1
and apply the NOT gate (
b
→
1
−
b
b \to 1 - b
b
→
1
−
b
) twice in a row. What is the final value of
b
b
b
?
0
2
1
-1
Check answer