4. Consider a quantum 3-it initially in the state |v) EC%. Suppose that the 3-it undergoes a reversible evolution associated with the unitary matrix A, immediately after which a measurement of the observable B is performed. What is (B) for this measurement if 0 0 -i 0 1 1 0 0 0 0 -iv and B = | 0 0 0 |v) = A ? (Express your result as an explicit real number.)
4. Consider a quantum 3-it initially in the state |v) EC%. Suppose that the 3-it undergoes a reversible evolution associated with the unitary matrix A, immediately after which a measurement of the observable B is performed. What is (B) for this measurement if 0 0 -i 0 1 1 0 0 0 0 -iv and B = | 0 0 0 |v) = A ? (Express your result as an explicit real number.)
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Transcribed Image Text:4. Consider a quantum 3-it initially in the state |v) e Cº. Suppose that the 3-it undergoes
a reversible evolution associated with the unitary matrix A, immediately after which a
measurement of the observable B is performed. What is (B) for this measurement if
0 0 -i
A = (0 1
1 0
0 0 -i
0 0
|v)
and B =
|? (Express your result as an
explicit real number.)
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