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bon

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## Homework Statement

Please see attached

## Homework Equations

## The Attempt at a Solution

So I'm trying to answer the final q - what fraction stagger right through?

The answer I get is 1/16... is this right? It just seems quite small..

My reasoning was that the probability of getting through the first is 1/4 and then if its in the state |1,x> the probability of measuring |-1,z> is also a quarter.. therefore it is 1/4 times 1/4 i.e. 1/16 right?