Title:Kilohertz Gravitational Wave Detectors
Time:1:30pm, Nov. 11, 2021 (Thursday)
Location:New Science Building 理科楼 C302
Abstract:Gravitational wave (GW) detections have opened up a new window for astronomy and broadened the scope of gravitational physics and high-energy astrophysics. Many GW events from compact binaries have been detected, including the famous binary neutron star event GW170817. This is the first joint detection with both GWs and electromagnetic waves and has revolutionized our understanding of neutron star physics and the origin of heavy elements. However, we have not observed the (post)merger part of this event due to the current detector sensitivity limitations. The Advanced LIGO and Virgo are most sensitive around a hundred Hz, while the merger signals happen at several kHz. This talk will introduce recent results on kHz GW detectors: (1) we can potentially achieve one order of magnitude improvement of Advanced LIGO sensitivity around kHz by using quantum measurement techniques; (2) the optimal arm length for the kHz detectors is around 20km, which provides a new opportunity for a Chinese ground-based GW detector, filling the gap between the Einstein Telescope (10km) and Cosmic Explorer (40km).
Bio:缪海兴主要研究方向是引力波探测和量子精密测量。他于2010年在西澳大利亚大学获博士学位，随后在加州理工开展博士后工作，从2014年至今年9月任教于英国伯明翰大学，今年10月入职betway必威。主要荣誉包括2010年国际引力波协会论文奖，2014年玛丽居里学者，2016年卢瑟福学者，同年作为LIGO组织成员荣获物理学突破奖。
