Our Lunch Talk of this week will be given by Dr. Mengjun Hu(胡孟军) at 11:00AM Friday(May. 17th) in the 19th-floor Observatory Hall (天文台报告厅).

The title of the talk is ”WMAGO: Weak measurement am plification based new -type laser interference gravitational wave detector”.

Abstract:

In this report, we propose a new laser interference gravitational wave detector based on weak measurement amplification. The detector is constructed by cascading a polarization Michelson interferometer and a Mach- Zehnder interferometer and introduces an optical cavity design. Noise spectrum calculations show that WMAGO has the potential to have lower quantum noise in higher frequency bands than existing gravitational wave detectors such as LIGO. This means that for gravitational wave detectors with quantum noise as the dominant noise, WMAGO can have better detection sensitivity and greater bandwidth in higher frequency bands.

Here is the references:

https://arxiv.org/abs/1707.00886

https://arxiv.org/abs/1709.01218

https://arxiv.org/abs/1801.04763

Dr. Hu got his PhD degree in the group of Prof. Guangcan Guo of USTC. Now, he is a researcher worked on quantum computing in Huawei Technologies Co., Ltd.

Inviter: Tan Liu (PhD student of our department)