List questions from quantum-mechanics | MathQa

How to plot a qubit on the Bloch sphere?

Published on 12 Jan 2025 - 23:40

Probability of a qubit state

Published on 12 Jan 2025 - 18:20

How to calculate this Delta Dirac Integral?

Published on 06 Jan 2025 - 9:35

The distribution solution to $L^{+} u=0$ is u=0, where $L^{+}=-\frac{d}{dx}+x$?

Published on 12 Jan 2025 - 23:39

Any closed form for this expression?$ \sum_{k=0,\,l=0}^{k=n,\,l=m}\frac{\lambda^{l+k}}{k!\,l!}\sqrt{\frac{n!\,m!}{(n-k)!(m-l)!}}\delta_{n-k,\,m-l}$

Published on 06 Jan 2025 - 15:43

Entanglement and linear algebra

Published on 12 Jan 2025 - 21:05

Perturbation theory, why are the assumptions of the method satisfied?

Published on 12 Jan 2025 - 8:44

Double-commutator $[f,[f, - \Delta]] = -2 |\nabla f|^2.$

Published on 07 Jan 2025 - 1:49

Compatible Hilbert space subspaces - need help understanding a statement made in a book

Published on 07 Jan 2025 - 15:08

Properties of Hermitian matrices

Published on 11 Jan 2025 - 9:51