科研之友
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摘要
We consider the quantum Rabi model with external time modulation of the atomic frequency, which can be employed to create excitations from the vacuum state of the electromagnetic field as a consequence of the dynamical Casimir effect. Excitations can also be systematically subtracted from the atom- field system by suitably adjusting the modulation frequency, in the so-called antidynamical Casimir effect (ADCE). We evaluate the quantum thermodynamical work and show that a realistic out- of- equilibrium finite-time protocol harnessing ADCE allows for work extraction from the system, whose amount can be much bigger than the modulation amplitude, |W-ADCE| >> h epsilon(Omega), in contrast to the case of very slow adiabatic modulations. We provide means to control work extraction in state-of-the-art experimental scenarios, where precise frequency adjustments or complete system isolation may be difficult to attain.
- 出版日期2017-7-5
