A qubit is prepared in a mixture of two pure states lWi >= (10 > +|1 >) and 1 2 >= (l0 > -i|1 >) with equal probabilities. Compute the density matrix of the average state with respect to the standard basis.
A qubit is prepared in a mixture of two pure states lWi >= (10 > +|1 >) and 1 2 >= (l0 > -i|1 >) with equal probabilities. Compute the density matrix of the average state with respect to the standard basis.
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B5
Transcribed Image Text:A qubit is prepared in a mixture of two pure
states
1 >=
(lo > +|1 >)
and
2 >=
(l0 > -i|1 >)
with equal probabilities. Compute the
density matrix of the average state with
respect to the standard basis.
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