报告时间：6月11日下午3:00

报告地点：近代物理系210会议室

报告题目：Towards single-shot readout of NV centers in diamond by low-temperature spin-to-charge conversion

报告人: Dominik Irber 慕尼黑理工大学 博士

摘要：This talk will focus on our recent progress in implementing an improved readout scheme for the nitrogen-vacancy (NV) center's spin-state combining resonant excitation at low temperature with spin-to-charge conversion. Resonant excitation exploits that the optical excitation spectrum at low temperature has sufficiently narrow linewidths to selectively address the spin-sublevels. In combination with a second laser pulse, a spin-to-charge conversion protocol can be implemented, where the NV center is spin-selectively excited and converted to different charge-states. These are more stable than the initial spin-state and can currently be read-out with near single-shot fidelity. Compared to the state-of-the-art readout, this work promises to accelerate readout by a factor of up to 100. Besides, laser power in the optical regime can be reduced by orders of magnitude. This reduces the risk of photo damage for future sensing experiments with biological samples. I will also talk a few about the planar scanning probe microscope.

Biography: Dominik Irber 2016年硕士毕业于德国慕尼黑理工大学沃特·肖特基学院，研究方向为半导体纳米线的输运性质，并于同年4月份加入该学院Dr. Friedemann Reinhard组攻读博士学位，研究方向转为基于金刚石NV色心体系的量子光学研究，博士期间建设了低温NV平台，并专注于提高自旋态的读出效率。