Posted by qwerty on Sunday, February 24, 2013 at 6:42pm.
Suppose we have a qubit in the state ψ>. We know that if we measure it in the standard basis, the probability of getting a 0 is 7/9. Now, if we instead first apply a Hadamard gate and then measure the resulting qubit Hψ> in the sign basis, what is the probability of getting a +?

Quantum Physics  helper, Tuesday, February 26, 2013 at 2:07am
7/9

Quantum Physics  Russel, Wednesday, August 28, 2013 at 3:03pm
2/9 is correct
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