论文标题
在非重点阵列中嵌入时间删除的量子反馈
Embedding of Time-Delayed Quantum Feedback in a Nonreciprocal Array
论文作者
论文摘要
延迟的量子反馈是一种快速有效的方法，可以控制和稳定很少和多体量子系统。但是，由于反馈协议的非马克维亚性质，对此类系统的正确理解保持不透明。在这里，我们提出了一种编码时间删除的量子反馈到非偶联辅助振荡器链中的方法。我们的方法是引入时间延迟的量子反馈的一种新颖方法，并提供了大型可调性的优势。重要的是，在我们的方法中，原始的非马克维亚系统嵌入了扩大的马尔可夫开放量子系统中，可以使用量子多体方法进行有效处理。作为一个示例性的例证，我们将马尔可夫嵌入方法应用于镜子前驱动的原子的范式情况。
Time-delayed quantum feedback is a fast and efficient method to control and stabilize few and many-body quantum systems. However, a proper understanding of such systems stays opaque due to the non-Markovian nature of the feedback protocol. Here, we present a method of encoding time-delayed quantum feedback into a chain of nonreciprocally coupled auxiliary oscillators. Our approach serves as a novel method of introducing time-delayed quantum feedback and provides the advantage of large tunability. Importantly, within our approach the original non-Markovian system is embedded into an enlarged Markovian open quantum system, which can be treated efficiently with quantum many-body methods. As an exemplary illustration, we apply our Markovian embedding approach to the paradigmatic case of a driven-dissipative atom in front of a mirror.
