2.报告题目：Towards a quantum standard for radio-frequency electric field

面向量子基准的微波电场精密测量

报告人：中国计量科学研究院  宋振飞副研究员

时间：2019年4月16日  上午10：30

地点：大学城校区理六栋301

报告摘要：

      Accurate electromagnetic field sensing is of great importance and necessity for exploring new materials, developing electronic devices and investigating electromagnetic effects. Ideally, radio-frequency (RF) field measurements should be directly linked to SI units with low intrusion, high sensitivity, wide dynamic range and low uncertainty. The current state-of-the art is far short of this goal. It has been proved that quantum coherence effects in highly-excited Rydberg atoms could provide a revolutionary solution for RF field measurement，the field strength can be directly linked to the measured Autler-Townes (AT) splitting and the Planck’s constant. Some recent progress and interesting applications will be presented, including the development of self-traceable quantum RF E-field and power standards, atomic communication. The preliminary measurement uncertainty evaluation and the main measurement error effects will be discussed as well.

报告人简介：

Dr. Zhenfei Song received the B.S. degree in Applied Physics from Shandong University in 2006, and the Ph.D. degree in Electronics Engineering from Beihang University (BUAA) in 2012. He was a visiting Ph.D. student in ESIGELEC, France, from 2009 to 2011, and a visiting scholar at the National Physical Laboratory (NPL), UK in 2015. 

Dr. Zhenfei Song joined the National Institute of Metrology (NIM) in 2012, first in the Information & Electronic Division, and now in the Center for Advanced Measurement Science (CAMS). He is currently an associate professor and the lab head of the Chip-scale Quantum Standard & Quantum Sensing. His research interests include antenna and microwave precision measurement, especially in atom-based quantum RF standards.