What Is the Correct Probability Calculation for a Quantum Circuit Measurement?

[Frank Schroer]

Homework Statement

input state is |1>(tensorproduct)(2|0>+|1>).

Homework Equations

Find the probability of the outcomes being 0 and 1 measuring the second qubit. And then what the outcome states of each are.

The Attempt at a Solution

I have attempted this problem and for the probability of 0 I am getting 2. This doesn't make sense because it should be a probability. I am using the formula |<psi|0>|^2 in order to calculate the probability. [/B]

 

[DrClaude]

input state is |1>(tensorproduct)(2|0>+|1>).

That state is not normalised.