Timeline for How to prove that $\mathrm{tr}(\rho^2)=1$ if and only if the state is pure?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Jan 11, 2018 at 10:01 | comment | added | George Farah | Thanks a lot for your answer. It is very clear and straightforward :) | |
| Jan 11, 2018 at 10:01 | vote | accept | George Farah | ||
| Jan 11, 2018 at 10:01 | vote | accept | George Farah | ||
| Jan 11, 2018 at 10:01 | |||||
| Jan 11, 2018 at 2:53 | comment | added | secavara | Thanks @WetSavannaAnimalakaRodVance for your suggestions and kindness. I'll take them into account. | |
| Jan 11, 2018 at 2:47 | comment | added | Selene Routley | Excellent answer, but I suggest beginning with "Now let's start assuming...." as this is the only info absolutely needed to answer the question. You could refer to the other results in the "Following the inequalities" sentence, as these are more background and could be replaced by "It can be shown". PS: the only reason I am being so pedantic is that this is a great answer to be a general reference for the demonstration of an important fundamental fact that people might want to cite. | |
| Jan 11, 2018 at 1:54 | history | answered | secavara | CC BY-SA 3.0 |