报告摘要

A second generation gravitational-wave detector is now operational and it is detecting several signals per month. The sensitivity of these instruments, which are the most precise displacement sensor ever built, is mainly limited by the quantum nature of light and more specifically by the vacuum quantum fluctuations entering their antisymmetric port. In this talk I will first give a brief introduction on the action mechanism of this noise. Then, I will present a quantum optics technique, known as squeezing, where vacuum states are manipulated to change their noise properties and injected into the interferometer to mitigate the quantum noise. Finally, I will discuss the current implementation of such a technique in the interferometers as well as the ongoing research for its further optimizations.

报告人

Eleonora Capcasa (NOAJ)

报告人介绍

Eleonora is postdoc researcher in the field of experimental gravitational waves at National Astronomical Observatory of Japan. She is part of the KAGRA collaboration and my work is mainly focused on the test of new technologies to reduce quantum noise in gravitational wave detectors.

地点

物理学院4楼阳光房

时间

6月19号上午10点

邀请人