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Multiple choice
The Pauli-Y operator acts as
Y
∣
0
⟩
=
i
∣
1
⟩
Y|0\rangle = i|1\rangle
Y
∣0
⟩
=
i
∣1
⟩
and
Y
∣
1
⟩
=
−
i
∣
0
⟩
Y|1\rangle = -i|0\rangle
Y
∣1
⟩
=
−
i
∣0
⟩
. What is the imaginary part of the matrix element
⟨
1
∣
Y
∣
0
⟩
\langle 1|Y|0\rangle
⟨
1∣
Y
∣0
⟩
?
0
i
i
i
-1
1
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