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Multiple choice
The T gate advances the phase of
∣
1
⟩
|1\rangle
∣1
⟩
by
π
/
4
\pi/4
π
/4
. Applying T twice (
T
2
T^2
T
2
) is circuit-equivalent to which single gate?
The identity gate I
The Hadamard gate H
The S gate
The Z gate
Check answer