[PDF] The Wave-Particle Duality in a Quantum Heat Engine-论文阅读讨论-ReadPaper

摘要

According to the wave-particle duality (WPD), quantum systems show bothparticle- and wave-like behavior, and cannot be described using only one ofthese classical concepts. Identifying quantum features that cannot bereproduced by any classical means is key for quantum technology. This task isoften pursued by comparing the quantum system of interest to a suitableclassical counterpart. However, the WPD implies that a comparison to a singleclassical model is generally insufficient; at least one wave and one particlemodel should be considered. Here we exploit this insight and contrast a bosonicquantum heat engine with two classical counterparts, one based on waves and onebased on particles. While both classical models reproduce the average outputpower of the quantum engine, neither reproduces its fluctuations. The wavemodel fails to capture the vacuum fluctuations while the particle model cannotreproduce bunching to its full extent. We find regimes where wave and particledescriptions agree with the quantum one, as well as a regime where neitherclassical model is adequate, revealing the role of the WPD in non-equilibriumbosonic transport.

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