Quantum Optics in Cavity QED

量子世界与经典的日常世界非常不同。仅仅是测量的行为就会影响量子物体，因此应用反馈来控制这样的物体是相当微妙的。研究人员将在腔QED实验装置上研究量子反馈，腔QED是量子信息科学发展的中心。研究的对象是在具有两个偏振模的腔QED系统中观察到的自发相干性。我们将研究如何在应用反馈的同时屏蔽和保护相干性免受干扰，同时我们还将开发选择后协议，帮助理解影响系统的干扰。一名全日制研究生将接受原子，分子和光学物理领域的培训，特别关注量子光学。学生将有足够的机会接触到访问马里兰州大学联合量子研究所的领域领导者。将有本科生参加在学年期间的研究工作，并在夏季。与Sociedad Mexicana de Física一起，两名墨西哥本科生将在实验室度过十周。该小组的结果将在JQI的网页上以及该小组的网页上公布，并向公众作出解释。学生们将给实验室图尔斯参观未来的本科生以及与PI采取课程的本科生。

The quantum world is very different from the classical, everyday, world. The mere act of measuring affects a quantum object so that applying feedback to control such object is rather delicate. The researchers will investigate quantum feedback on an experimentalapparatus, Cavity QED, which has been center to the development of quantum information science. The object of study is the spontaneously generated coherence observed in a cavity QED system with two polarization modes. We will look into ways to shield and protect the coherence from disturbances while applying feedback, while we will also develop post-selection protocols that help understand the disturbances affecting the system.One full time graduate student will be trained in the area of Atomic, Molecular, and Optical Physics with special focus on quantum optics. The student will have ample exposure to leaders in the field that visit the Joint Quantum Institute of the University of Maryland. There will be undergraduates participating in the research effort during the academic year, and in the summer. In conjunction with the Sociedad Mexicana de Física, two Mexican undergraduates will spend ten weeks in the laboratory. The results of the group will be available on the web page of the JQI as well as in the one of the group, with explanations for the general public. The students will give lab tours to prospective undergraduate students as well as to the undergraduates that take courses with the PI.