Lostaglio Matteo
ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels (Barcelona) 08860, Spain.
QuTech, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, Netherlands.
Phys Rev Lett. 2020 Dec 4;125(23):230603. doi: 10.1103/PhysRevLett.125.230603.
I identify a fundamental difference between classical and quantum dynamics in the linear response regime by showing that the latter is, in general, contextual. This allows me to provide an example of a quantum engine whose favorable power output scaling unavoidably requires nonclassical effects in the form of contextuality. Furthermore, I describe contextual advantages for local metrology. Given the ubiquity of linear response theory, I anticipate that these tools will allow one to certify the nonclassicality of a wide array of quantum phenomena.
通过表明量子动力学在一般情况下是情境依赖的，我确定了线性响应区域中经典动力学与量子动力学之间的一个根本差异。这使我能够给出一个量子引擎的例子，其有利的功率输出缩放不可避免地需要情境依赖形式的非经典效应。此外，我描述了局部计量学的情境优势。鉴于线性响应理论的普遍性，我预计这些工具将使人们能够证明各种量子现象的非经典性。
