论文标题
具有长距离优势的量子加热引擎
Quantum heat engine with long-range advantages
论文作者
论文摘要
量子设备中长距离交互的使用，为增强其在量子技术应用中的性能提供了有希望的途径。在这里，长期相互作用的存在被证明可以增强具有多体工作物质的量子热引擎的性能。我们关注的是经过量子奥托循环的基塔夫链的范式示例，并表明随着其成分之间相互作用的范围的增加，可以实现实质性的热力学优势。有趣的是，这种优势对于有限的时间周期的现实情况是最重要的：长期相互作用的存在通过抑制动态产生的激发的有害影响，从而减少了非绝热能量损失。这种效果允许减轻功率和效率之间的权衡，为广泛的实验和技术应用铺平道路。
The employment of long-range interactions in quantum devices provides a promising route towards enhancing their performance in quantum technology applications. Here, the presence of long-range interactions is shown to enhance the performances of a quantum heat engine featuring a many-body working substance. We focus on the paradigmatic example of a Kitaev chain undergoing a quantum Otto cycle and show that a substantial thermodynamic advantage may be achieved as the range of the interactions among its constituents increases. Interestingly, such an advantage is most significant for the realistic situation of a finite time cycle: the presence of long-range interactions reduces the non-adiabatic energy losses, by suppressing the detrimental effects of dynamically generated excitations. This effect allows mitigating the trade-off between power and efficiency, paving the way for a wide range of experimental and technological applications.
