Combining energy efficiency and quantum advantage in cyclic machines

IF 15.7 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Waner Hou, Wanchao Yao, Xingyu Zhao, Kamran Rehan, Yi Li, Yue Li, Eric Lutz, Yiheng Lin, Jiangfeng Du
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Abstract

Energy efficiency and quantum advantage are two important features of quantum devices. We here report an experimental realization that combines both features in a quantum engine coupled to a quantum battery that stores the produced work, using a single ion in a linear Paul trap. We begin by establishing the quantum nature of the device by observing nonclassical work oscillations with the number of cycles as verified by energy measurements of the battery. We moreover apply shortcut-to-adiabaticity techniques to suppress quantum friction and improve work production. While the average energy cost of the shortcut protocol is only about 3%, the work output is enhanced by up to approximately 33%, making the machine significantly more energy efficient. We additionally show that the quantum engine consistently outperforms its classical counterpart in this regime. Our results pave the way for energy efficient machines with quantum-enhanced performance.

Abstract Image

结合循环机器的能源效率和量子优势
能量效率和量子优势是量子器件的两个重要特征。我们在此报告了一种实验实现,该实现结合了量子引擎和量子电池的两个特征,量子电池使用线性保罗阱中的单个离子存储产生的功。我们首先通过观察电池能量测量验证的非经典功振荡的周期数来建立该装置的量子性质。此外,我们还应用了绝热捷径技术来抑制量子摩擦和提高功产量。虽然捷径协议的平均能源成本仅为3%左右,但工作输出提高了约33%,使机器显着提高了能源效率。我们还表明,在这种情况下,量子引擎的性能始终优于经典引擎。我们的研究结果为具有量子增强性能的节能机器铺平了道路。
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来源期刊
Nature Communications
Nature Communications Biological Science Disciplines-
CiteScore
24.90
自引率
2.40%
发文量
6928
审稿时长
3.7 months
期刊介绍: Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.
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