Conditional evolution and real-time feedback in open quantum systems

本课题主要对腔QED中单原子动力学的连续观测和反馈控制进行实验和理论研究。重点将放在新发现的一类超临界霍普夫分岔上，这些分岔是由原子-腔动力学的半经典模型和量子模型预测的。该计划是通过实时滤波和反馈实验来研究这些模型之间的量子-经典对应关系，并使用单原子分岔作为设置来研究量子波动与半经典动力学不稳定性的相互作用。本文将构建一个用法布里-珀罗光学谐振器和由磁微结构引导的原子进行腔QED的实验装置。更广泛的影响包括研究生教育以及多样性和外联的努力。

This research project focuses on experimental and theoretical research on continuous observation and feedback control of single-atom dynamics in cavity QED. The focus will be on a newly discovered class of supercritical Hopf bifurcations that are predicted both by semi-classical and quantum models for the atom-cavity dynamics. The plan is to investigate quantum-classical correspondence between these models via experiments with real-time filtering and feedback, and to use single-atom bifurcations as a setting to study the interaction of quantum fluctuations with semi-classical dynamical instabilities. An experimental apparatus to perform cavity QED with a Fabry-Perot optical resonator and atoms guided by a magnetic micro-structure will be constructed. The broader impact involves education of graduate students as well as efforts in diversity and outreach.