Timeline for Probabilities of pure states and density operators
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 28, 2014 at 21:38 | comment | added | Red Pencil | Dunno why I was struggling with this thing. I think the main problem was that I did not think of pulling out $\langle ψ_1|ψ_2\rangle$ out of the trace... :x Cheers! | |
| Dec 28, 2014 at 21:35 | comment | added | Phoenix87 | yes, provided $|\phi_i\rangle$ form an orthonormal basis of the Hilbert space and you allow the sum to be an integral when needed | |
| Dec 28, 2014 at 21:31 | comment | added | Red Pencil | Thank you! Is this justified by: $tr(|ψ_1\rangle \langleψ_2|) = \sum_i \langle φ_i|ψ_1\rangle \langle ψ_2|φ_i\rangle = \sum_i \langle ψ_2|φ_i\rangle \langle φ_i|ψ_1\rangle = \langle ψ_2|ψ_1\rangle$? | |
| Dec 28, 2014 at 21:05 | vote | accept | Red Pencil | ||
| Dec 28, 2014 at 20:44 | history | answered | Phoenix87 | CC BY-SA 3.0 |