Statistical physics IV

PHYS-436

Questions for paper:Review the structure of the de...

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Questions for paper:

Review the structure of the density matrix for a harmonic oscillator. What is the density matrix for a thermal state? What do the digonal/off-diagonal elements represent.
Which Lindblad operators give rise to Eq (1)?
How can one distinguish energy relaxation from dephasing?
Briefly explain how to prepare arbitrary superpositions of Fock states?
Consider the dephasing Hamiltonian for a harmonic oscillator. What would be the procedure for taking into account the pure dephasing dynamics in the Langevin approach?