  We carry out a study on thermodynamics properties as entropy and heat $J_{Q}$
and work $J_{W}$ fluxes involved in a Ramsey zone, i.e., a mode field inside a
low quality factor cavity that behaves classically and promotes rotations on
atomic states. Focusing on the atomic dynamic only, here we show that $J_{W}$
predominates when the atomic state evolves maintaining its maximum purity, as
computed by von Neumann entropy, in which case the rotation is successfully
applied. On the other hand, $J_{Q}$ is the quantity that stands out when the
atomic state ceases to be pure due to its entanglement with the cavity field
mode state. We describe those limits in terms of the driving strength, the
atom-field coupling and the cavity field dissipation rate, and interpret the
quantum-to-classical transition in light of the heat and work fluxes. Besides,
we show that for a driven-dissipative cavity mode to work out as a Ramsey zone
(classical field), a very large amount of photons, of the order of $10^{6}$,
need to cross the leaky cavity, which explains the classical behavior of the
intra-cavity mode field even though, on average, it has a number of photons of
the order of unity [Phys. Rev. Lett. 82, 4737 (1999)]
