Thanks
Thanks James
After a long hard think and a bit of maths I think I get it now. I think my understanding of the density matrix was wrong. We can make density matricies of pure states Sy up and down. When the measurements are thrown away all we know is that there are 2 different pure...
Still not quite there
Thanks for taking the time to reply. However I am still unsure how to tackle the problem as I don't understand the meaning of \ M_m or what it represents and how I can use it.
In your last reply you have pointed out exactly my problem. I have found the probabilities of a...
Hi I am just doing an undergraduate degree in physics and currently studying a course in the foundations of QM.
The problem I want to solve is this:
There is an ensemble in a state corresponding to vector (i, 2)
A measurement of Sy (with the operator represented by the 2x2 pauli spin...