New answers tagged open-quantum-systems
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Finding a density matrix for a distirbution of pure states
It's a bit tedious, but still doable.
First of all, without loss of generality, we can write:
$$\newcommand\ket[1]{\left|#1\right\rangle}\ket{\psi_0}=\begin{pmatrix}\alpha\\\beta\mathrm{e}^{\mathrm{i}\...
- 7,322
1
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What would a master equation describe for a Hamiltonian $H=\alpha 1 + \beta \sigma_x$?
The term $-i[H, \rho]$ governs the coherent evolution of the system. This is the same as the von Neumann equation of motion
$$
\frac{d\rho}{dt} = -i[H, \rho]
$$
with $\hbar = 1$, and it describes the ...
- 3,191
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