Abstract
The upsurge of interest in the field known as quantum thermodynamics (QTD) has not yet resolved the key issue: Are there truly advantageous quantum resources that can boost the performance of thermodynamic (TD) machines? The resolution of this issue requires a grasp of the principles and bounds that rule quantum machines powered by heat[1]. To this end, we invoke the work-capacity of quantum states[2] and propose a quantum-optical procedure for its conversion via coherent control and quantum measurements[3] into work. This procedure may allow us to maximize the work extractable from heat machines, as well as operate them as quantum heat transistors or heat diodes. The inverse regime of such machines entails cold-bath refrigeration [4] by heat transfer to a hotter bath. We find that, contrary to common claims, quantum advantage in machines[5] is very hard to come by. We have identified such an advantage, obtained by driving the working medium at a fast rate compatible with the non-Markovian anti-Zeno regime[6-7]. This quantum advantage is manifest by a nearly 10-fold boost in power output. Ongoing experimental efforts to implement the foregoing schemes will be surveyed.
References:
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