All Questions
2 questions
2
votes
0
answers
51
views
Bloch representation of a quantum channel acting on a 2-qubit density-matrix
A previous answer nicely show the relationship between the Pauli transfer matrix (PTM) and the Bloch representation of a quantum channel that acts on single-qubit density matrix.
In short, given a ...
- 268
2
votes
1
answer
212
views
Affine transformation of the Bloch sphere to Kraus representation of qubit channels
It is known that qubit channels can be written in the form:
$$
\begin{align}
\Phi(\rho) = \frac{1}{2}\left(I+(T\vec{r}+\vec{t})\cdot\sigma\right)\
\end{align}
$$
where $\vec{r}$ is the Bloch vector ...
- 31