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True / False
A two-qubit state
α
∣
00
⟩
+
β
∣
01
⟩
+
γ
∣
10
⟩
+
δ
∣
11
⟩
\alpha|00\rangle + \beta|01\rangle + \gamma|10\rangle + \delta|11\rangle
α
∣00
⟩
+
β
∣01
⟩
+
γ
∣10
⟩
+
δ
∣11
⟩
is a product (separable) state only if
α
δ
=
β
γ
\alpha\delta = \beta\gamma
α
δ
=
β
γ
. For the Bell state with
α
=
1
/
2
\alpha = 1/\sqrt{2}
α
=
1/
2
,
δ
=
1
/
2
\delta = 1/\sqrt{2}
δ
=
1/
2
, and
β
=
γ
=
0
\beta = \gamma = 0
β
=
γ
=
0
, the state is ENTANGLED. True or false?
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True
False
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