Ok. So if I get it correctly, there are k vectors who belong to the reciprocal lattice, having periodicity the same as the real lattice (and the ones responsible for diffraction phenomena) and then there is K space for all the rest of the waves that can travel through the medium?
Hey guys,
I just realized that there is a gap somewhere in my understanding of K vectors and reciprocal space.
My question is how can we talk about K vectors "living" in the first Brillouin Zone, when these vectors cannot be expressed on the vector form of reciprocal space ( r*=ha*kb*+lc* ...
hilbert2 I thank you very very much! The problem itself is based on conceptual understanding so I guess we should not really care whether operator A has physical meaning or not.
Again, thank you very much!
Ok I see your point! My concern now is whether operator A is a fictional-theoretical operator for the sake of the problem or must be a real one. Must it be self-adjoint? What is the characterization of operator A?
Hello guys,
Homework Statement
the problem goes as follows:
"Which measurement should you do on a statistical ensemble of qubits in order to distinguish between the pure state |Ψ>= cos(θ)|0> + sin(θ)|1> and the mixed state ρ=cos^2(θ)|0><0| + sin^2(θ)|1><1| "
Homework Equations
I am not...