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- W4248766502 abstract "We studied the thermodynamics of quantum light amplification in Phys. Rev. A 74, 063822 (2006). In this work we extend our analysis to include quantum light attenuation, as well as saturated amplification. We show that, for a given excitation of the two reservoirs, different field states converge to the same final stationary state. We provide a full analytic solution of the $3ensuremath{bigotimes}n$ matter-light density matrix at steady state. The final steady state has three remarkable properties: (i) it is in fact an equilibrium state, (ii) it is an independent (single tensor product) matter-field state (as seen by the vanishing thermodynamic fluxes), and (iii) the final field state assumes a bithermal distribution (as seen by a wide Gaussian $Q$ function centered around the origin). By partially tracing over the field, we obtain the Scovil--Schulz-DuBois atomic inversion formula [Phys. Rev. Lett. 2, 262 (1959)] analytically. We compare the quantum model with its semiclassical analog. Unlike the amplification scenario discussed in Phys. Rev. A 74, 063822 (2006), the quantum and the semiclassical models differ dramatically under the conditions discussed in this paper." @default.
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- W4248766502 date "2008-07-17" @default.
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- W4248766502 title "Thermodynamic analysis of quantum light purification" @default.
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- W4248766502 doi "https://doi.org/10.1103/physreva.78.013825" @default.
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