论文标题
浴工程增强量子关键发动机
Bath engineering enhanced quantum critical engines
论文作者
论文摘要
跨量子系统驱动量子系统会导致系统中的非绝热激发。反过来，这可能会对使用量子关键物质作为其工作介质的量子机的功能产生不利影响。在这里，我们提出了一个浴缸工程的量子发动机（BEQE），其中我们使用kibble-zurek机制和临界缩放定律来制定一项协议，以增强有限的量子发动机的性能，接近量子相变。在免费的费米基系统的情况下，BEQE使有限的发动机能够在适用于绝热性的捷径下运行的发动机，甚至在适当的条件下无限时间发动机，从而显示出此技术提供的显着优势。关于基于非整合模型的BEQE的使用仍然存在开放问题。
Driving a quantum system across quantum critical points leads to non-adiabatic excitations in the system. This in turn may adversely affect the functioning of a quantum machine which uses a quantum critical substance as its working medium. Here we propose a bath-engineered quantum engine (BEQE), in which we use the Kibble--Zurek mechanism and critical scaling laws to formulate a protocol for enhancing the performance of finite-time quantum engines operating close to quantum phase transitions. In the case of free fermionic systems, BEQE enables finite-time engines to outperform engines operating in the presence of shortcuts to adiabaticity, and even infinite-time engines under suitable conditions, thus showing the remarkable advantages offered by this technique. Open questions remain regarding the use of BEQE based on non-integrable models.
