Two qubit state: Separable vs Entangled vs Bell states

[@MiguelBacaoco]

Thanks for the really nice and concise video on composite quantum systems. What book do you recommend that contains these topics? Thanks!

[@JonahBernard]

Can you please explain the intuition behind the separability condition formula (or even make a video about it)?

[@crazydor12345]

if the state is pure it means that = 1 --> rho^2 = ( | psi > < psi | ) ^2 = | psi > < psi | = | psi > I < psi | = rho, so any rho^n = rho on pure state, so any Tr(rho^n) = Tr(rho) = 1

[@VictoriaChristopher-p4p]

​@@crazydor12345that's magic not intuition...😂 Can u explain it to 10year old

[@JoseDanielFSX]

Hello, thank you for your video, I'm currently writing my thesis on this topic. I'd like to propose a question, is there any way to find a generalization of the separability condition for n dimensions?

[@dfhk872]

for calculating the average value of an observable when can we use the density matrix and when can we use the reduced density matrix

[@professornanoscience]

that depends on how the measurement is done

[@dfhk872]

@@professornanoscience I have a system S interact with environment and I would evaluate the average value of an observable A acting on S. Note that I don't know the orthonormal basis of environment . Thank you very much.

[@jacquesenboit6351]

​​​​​@@professornanoscienceThis is a quintessential Singaporean answer: incomplete yet completely useless.😂

[@saulberardo5826]

❤