You can write the density matrix of a single qubit as follows:
rho = (1/2)( Id + \vec(a) . \vec(sigma))
Now \vec(a) is a time-dependent three dimensional vector (with real components) in the Bloch ball. You have to identify the three
components of \vec(a).
Hope this helps.
N.M
rho = (1/2)( Id + \vec(a) . \vec(sigma))
Now \vec(a) is a time-dependent three dimensional vector (with real components) in the Bloch ball. You have to identify the three
components of \vec(a).
Hope this helps.
N.M
