信息与量子学术沙龙:Chip-scale PhC cavity optomechanics for the applications on reference clock and precision measurements

文:基础与前沿研究院 图:基础与前沿研究院 / 来源:基础与前沿研究院 / 2019-02-23 / 点击量:1629

    由基础与前沿研究院量子信息研究中心主办的“信息与量子学术沙龙”第6期邀请到电子科技大学黄勇军副教授作学术交流。具体安排如下,欢迎师生们参加。

  主讲人:黄勇军  副教授

  时 间:2019年2月28日(周四),下午15:00

  主 题:Chip-scale PhC cavity optomechanics for the applications on reference clock and precision measurements

  地 点:沙河校区通信楼725会议室

huang.jpg

  主讲人简介:

  Dr. Yongjun Huang received the M.S. and PhD. degrees from University of Electronic Science and Technology of China (UESTC), Chengdu, China, in June 2010, and December 2016. From September 2013 to September 2015, he was a visiting scholar with the Solid-State Science and Engineering, and Mechanical Engineering, Columbia University, New York City, NY, USA, and a visiting project scientist with the Electrical Engineering, University of California at Los Angeles (UCLA), Los Angeles, CA, USA. He is currently an Associate Professor with School of Information and Communication Engineering, UESTC. His research interests include chip-scale photonic crystal cavity optomechanics, low phase noise RF sources, and high-resolution force/field sensors. He also researches on the optomechanical metamaterials and metasurfaces for EM wave-front dynamic manipulations.

  报告摘要:

  This talk will present our recently research achievements on the air-slot line-defected photonic crystal nano optomechanical cavity. Firstly, we developed a monolithic integration of photonic crystal optomechanical oscillators and on-chip high speed Ge detectors by using the silicon CMOS platform. With the generation of both high harmonics (up to 59th order) and subharmonics (down to 1/4), our chipset provides multiple frequency tones for applications in both frequency multipliers and dividers. Moreover, the synchronization in such air-slot photonic crystal optomechanical oscillators are observed and discussed. These characteristics enable optomechanical oscillators as a frequency reference platform for radio-frequency-photonic information processing. Then we introduce the PhC optomechanical cavity platform for precision measurements. The proposed optomechanical cavity with large mass can operate at ~77.7 kHz. Two applications for acceleration and magnetic field detections are proposed and analyzed briefly. The initial measured results obtained in our group are presented, including the sensitivity, resolution, dynamic range and bias instability.


                         基础与前沿研究院

                          2019年2月22日



编辑:王晓刚  / 审核:王晓刚  / 发布者:陈伟